HomeMy WebLinkAboutTONJESS ESTATES Block 2 Lots 14, and 16-23 Block 3 Lots 12, 13, and 21-24 Soil Reports
ALASKA 6nUIROFIm61 TAL CONTROL $6RUICe$, inc.
~n§incerin§ ~- ~nuironmental $1uclies
Soils Report - Tonjess Estates; Lot 14, 16 thru
Lots 21-24 Bloek 3
Land Forms
23 Block 2 ;
The Topography in this part of the subdivision bordering
Homestead Road is considerably different from lower reaches of
the subdivision. The grades to the east of Homestead approach
and exceed 25%. These slopes contain angular rock to boulders
with a surprising amount of silt. Some sand and round gravels
are present in pockets. The land to the west of Homestead
slopes to a ridge line which rises above the valley floor. A
steep drop occurs along the lot lines of lots 16 and 21 Block
3. Although not evident on Lot 21 except by groundwater a
stream emerges on the lower parts of lot 16. The soils on Lots
22-24 and parts of Lot 21 appear to be the lower part of a
Talus zone. Rocks are angular with few fine sands or gravels.
The void area appears to be filled with decomposed vegetation
which appears to have been washed downward from water forces.
The boundaries of lots 23-24 with lots 12-13 form a shelf. On
this shelf the soils were round gravels and cobbles with some
silt seams.
Vegetation
The vegetation generally consists of large cottonwoods over 3
feet in diameter with alder and devil's club understory. In
the areas exposed to more sunlight there are birch and spruce
intersperced with the cottonwoods. Also, grass grows in the
open areas.
Testing Methods
The test holes on this section were dug with a John Deere 450
crawler backhoe. Maximum depth with this rig ranges from 13-14
feet. Test holes were dug to the hoe's range or until a depth
where suitable soils were obtained to insure a satisfactory
system. In several instatances the gravel was so loose that
the holes collapsed before the maximum depth was obtained.
Suitability for On-site Systems
Each of the lots tested had adequate soils for on-site sewer
systems. Several holes had slight seeps. None of them appeared
to be major. In general, conventional on-site systems such as
drainfields and shallow trenches can be used. On those lots
with talus like rock it is advisable to use a shallow bed or
mound systems. The large talus material with the voids
containing duff offer little resistance to water flow and
range from good to very poor filtering materials. If poorly
graded but clean sands are used at depths about two feet deep
the filtering action will reduce the possibility of shallow
aquifer pollution. The nominal design rating would be 150
1220 UJest 25t}~ /~uenu¢ · Anchora§e, AlasJ:a 99503 · [907) 276-1361
sq.ft per bedroom which is the rating for sand. If the systems
are set at minus 4 feet it would allow for 2 feet of sand plus
1 foot of rock and 1 foot of cover before reaching the
origional ground level. The native material could be mounded
over the bed or insulation could be used. A typical bed for a
three bedroom house would be 18 feet x 38 feet.
.~ SOILS LOG
MUNICIPALITY OF ANCHORAGE
[] PERCOLATION
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
TEST
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
1
2
3
4
5
6
7
8
9
DATE PERFORMED:
SLOPE SITE PLAN
T
/
10
11
12
13
14
15
16-
17-
18-
WAS GROUND WATER S
ENCOUNTERED? ~)O QL.
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time .Water Drop
20-
PERCOLATION RATE ~'~.~%~,~ (~ M t e s/i n c h I
~' SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION [] PERCOLATION
TEST
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
1
2
3-
4-
5-
6
7
8
9
10
11
12
13
14
15-
16-
17-
18-
19-
20
COMMENTS
PERFORMED BY:
72-008 (6/79)
J
DATE PERFORMED:
SLOPE SITE PLAN
WAS GROUND WATER S
ENCOUNTERED? OL
P
E
IF YES, AT WHAT
DEPTH?
Reading Date Gross Net Depth to Net
Time Time Water Drop
PERCOLATION RATE
TEST RUN BETWEEN
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Streot, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
~ SOILS LOG
[] PERCOLATION
TEST
PERFORMEO FOR:
LEGAL DESCRIPTION:
DATE PERFORMED:
5-
6-
7
8
9
10
12
13
14
15
16
17
COMMENTS
SLOPE SITE PLAN
WAS GROUND WATER S
ENCOUNTERED? ~
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
PERCOLATION RATE
TEST RUN BETWEEN
PERFORMED BY: .~
72-008 [6/79)
CERTIFIED BY:
SOILS
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION [] PERCOLATION
TEST
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
DATE PERFORMED: ///-- /?-- ~-,~
LEGAL DESCRIPTION: ~.6 ~ 2~/' /~/OC'~ ~
- 2
3
4
5
6
7
8
SLOPE SITE PL,
10-
11-
12-
13
14
15
16
17
18-
19-
20-
COMMENTS
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
Reading Date Gross Net Depth to Net
Time Time Water Drop
PERCOLATION RATE
TEST RUN BETWEEN
PERFORMED BY: .L )/~- ~ c) CERTIFIED BY:
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
~- SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR; ~ _,]Z'~'~' ~/~' /~ /c~' DATE PERFORMED:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16-
18-
19.-
20-
COMMENTS
PERFORMED BY:
72-008 (6/79)
SLOPE 'LAN
/O¢2 /
I
WAS GROUND WATER S
ENCOUNTERED? OL
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time Water Drop
PERCOLATION RATE
TEST RUN BETWEEN
CERTIFIED
utes/inch)
DATE:
~ ~ .~ solus .OG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
PERCOLATION
TEST
· EG^'. OESORIPT,ON: joy/? /~/o~ / s
3
4
7-
8-
9-
10-
11
12
13
14
15
16
17
18-
19-
20-
T//z
COMMENTS
DATE PERFORMED: /// ~ /P-- ~//
s, /~/
SLOPE
SITE PLAN/~ ~
WAS GROUND WATER S
ENCOUNTERED? ~L
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time Water Drop
/ ~'. I? o ~. -2~
Z 3:~_1 4 o. /o
TEST RUN BETWEEN
es/inch)
CERTIFIED BY:
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION [] PERCOLATION
TEST
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG- PERCOLATION TEST
PERFORMED FOR:
1
2
3 --
4
5
6-
7
8
9
10
11
12
13
14
15
16-
17-
18-
20-
COMMENTS
PERFORMED BY:
72-008 (6/79)
SLOPE SITE PLAN
WAS GROUND WATER
ENCOUNTERED? /~ O SL
O
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
TEST RUN BETWEEN
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, ~laska 99501 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
[] PERCOLATION
TEST
DATE PERFORMED: //--/ ~-- ?/
LEGAL DESCRIPTION:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
COMMENTS
PERFORMED BY:
72-008 (6/79)
,Lo4/4
SLOPE
SITE PLAN
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
PERCOLATION RATE
TEST RUN ~ETWEEN
mutes/inch)
ATE:
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR:
DATE PERFORMED:
LEGAL DESCRIPTION:
1
2
3
4-
5-
6
7
8
9
10
11
12
13
14-
15-
16-
17-
18
19
20
COMMENTS
PERFORMED BY:
72-008 (6/79)
SLOPE
SITE PLAN
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time Water Drop
~ SO~LS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG -- PERCOLATION TEST
[] PERCOLATION
TEST
DATE PERFORMED:
LECA, DESCR PT,O.: ZO /
2
3
4
5
6
7
8
9-
10-
11
12~
13-
14-
15-
16-
17-
18-
19-
20-
COMMENTS
PERFORMED BY:
72-008 (6/79)
SLOPE
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
SITE PLAN
Gross Net Depth to Net
Reading Date
Time Time Water Drop
PERCOLATION RATE ,~' ~'~F ~,~s/inch)
TEST RUN BETWEEN
CERTIFIED
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
,J~ SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR:
DATE PERFORMED: //--/¢
LEGAL DESCRIPTION:
1
2
3
4
5
6
7
8-
9-
10-
11
12
13
14
15
16
17,
18-
20-
COMMENTS
PERFORMED BY:
72-008 (6/79)
/,¢,7 /¢ £/,,
SLOPE
SITE PLAN
WAS GROUND WATER ~CO S
ENCOUNTERED? ~)
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time Water Drop
PERCOLATION RATE
TEST RUN BETWEEN
CERTIFIED BY:
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
[] PERCOLATION
TEST
SOILS LOG - PERCOLATION TEST
PERFORMEDFOR: ,n J.r ;/
DATE PERFORMED:
LEGAL DESCRIPTION:
1
4-
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19-
20-
COMMENTS
PERFORMED BY:
72-008 (6/79)
SLOPE
SITE PLAN
/ /
WAS GROUND WATER S
ENCOUNTERED? ~
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time Water Drop
PERCOLATION RATE
TEST RUN BETWEEN
CERTIFIED BY:
:es/inch)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
PERCOLATION
TEST
PERFORMED FOR:
LEGALDESCRIPTION: }O¢
DATE PERFORMED:
SLOPE SITE PLAN
10-
12-
~13 -
14-
15-
16-
17-
18-
20-
COMMENTS ~'/¢ ~_
PERFORMED BY:
72-008 16/79)
WAS GROUND WATER ~
ENCOUNTERED? L ~
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
PERCOLATION RATE ~" ~
TEST RUN BETWEEN ~' ~- ·
CERTIFIED BY:
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION [] PERCOLATION
TEST
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
PERFORMED FOR: '
LEGAL DESCRIPTION:
1
4
5
6
7
8
9
10
11
12-
.13£
. 14-
15
16
17
18
19-
20-
DATE PERFORMED:
SLOPE SITE PLAN~ 'g-/
WAS GROUND WATER ~
~NCOUNTEREO? pO
IF YES, AT WHAT
DEPTH?
'1
Reading Date Gross Net Depth to Net
Time Time Water Drop
PERCOLATION RATE es/inch)
TEST RUN BETWEEN
COMMENTS
PERFORMEDBY: / ~r'~
CERTIFIED BY:
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
82E L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG -- PERCOLATION TEST
~ SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
1
2,
3
4
5
6
7-
8-
9-
10-
12-
13-
14-
15-
16-
17
18
19
20
SLOPE
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
SITE PLAN
Gross Net Depth to Net
Reading Date Time Time Water atop
PERCOLATION RATE
TEST RUN BETWEEN
ALASKA elqUIROFlmenTAL COFITROL
$gRUICg$, IFlC.
Soils Report - Tonjess Estates; Lot 14, 16 thru 23 Block 2 ;
Lots 12, 13, 21-24 Block 3
Land Forms
The Topography in this part of the subdivision bordering
Homestead Road is considerably different from lower reaches of
the subdivision. The grades to the east of Homestead approach
and exceed 25%. These slopes contain angular rock to boulders
with a surprising amount of silt..Some sand and round gravels
are present in pockets° The land to the west of Homestead
slopes to a ridge line which rises above the valley floor° A
steep drop occurs along the lot lines of lots 16 and 21'Block
3. Although not evident on Lot 21 except by groundwater a
stream emerges on the lower parts of lot 16, The soils on Lots
22-24 and parts of Lot 21 appear to be the lower part of a
Talus zone. Rocks are angular with few fine sands or gravels.
The void area appears to be filled with decomposed vegetation
which appears to have been washed downward from water forces.
The boundaries of lots 23-24 with lots 12-13 form a shelf. On
this shelf the soils were round gravels and cobbles with some
silt seams°
Vegetation
The vegetation generally consists of large cottonwoods 6ver 3
feet in diameter with alder and devil's club understory. In
the areas exposed to more sunlight there are birch and spruce
intersperced with ~he cottonwoods. Also, grass grows in the
open areas.
Testing Methods
The test holes on this section were dug with a John Deere 450
crawler backhoe. Maximum depth with this rig ranges from 13-14
feet. Test holes were dug to the hoe's range or until a depth
where suitable soils were obtained to insure a satisfactory
system. In several instatances the gravel was so loose that
the holes collapsed before the maximum depth was obtained.
Suitability for.On-site Systems
Each of the lots tested had a~equate soils for on-site sewer
systems. Several holes had slight seeps. None of them appeared
to be major. In general, conventional on-site systems such as
drainfields and shallow trenches can be used. On those lots
with talus like rock it is advisable to use a shallow bed or
mound systems° The large talus material with the voids
containing duff offer little resistance to water flow and
range from good to very poor filtering materials° If poorly
graded but clean sands are used at depths about two feet deep
the filtering action will reduce the possibility of shallow
aquifer pollution. The nominal design rating would be 150
1220 ~¢s1251h~u~u~nc~or~§~,~I~sk~995o3e(9o7) 276-1361
sq.ft per bedroom which is the rating for sand. If the systems
are set at minus 4 feet it would allow for 2 feet of sand plus
1 foot of rock and 1 foot of cover before reaching the
origional ground level. The native material could be mounded
over the bed or insulation could be used. A typical bed for a
three bedroom house would be 18 feet x 38 feet.
~ SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION [] PERCOLATION
TEST
8:~5 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG -- PERCOLATION TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
1
2
3
4
5
6-
7-
8-
9-
DATE PERFORMED:
SLOPE SITE PLAN
.!
10-
11
12
13
14
15
16
17
18-
19-
20-
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
Reading Date Gross Net Depth to Net
Time Time Water Drop
PERCOLATION RATE ·
· TE~T RON ~ETWEEN" _
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264 4720
SOILS LOG -- PERCOLATION TEST
~ SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
d
6
7
8
9
10
11
1
2
3-
4-
5--
13-
14-
15-
16-
17
18
19
20-
)
DATE PERFORMED:
SLOPE SITE PLAN
COMMENTS
WAS GROUND WATER S
ENCOUNTERED? L
O
P
E
IF YES, AT WHAT
DEPTH?
Reading Date Gross Net Depth to Net
Time Time Water Drop
PERCOLATION RATE
TEST RUN BETWEEN
PERFORMED BY:
72-008 (6/79)
CERTIFIED BY:
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street. Anchorage, Alaska 99501 264-4720
SOILS LOG -- PERCOLATION TEST
~ SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
DATE PERFORMED:
4-
5
6
7
8
9
10
11
12
13
14
15-
16-
17-
18-
20
COMMENTS
PERFORMED BY: ~
72-008 (6/79)
L
SLOPE SITE PLAN .~./L ?_,/,: ,
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
S
Reading Date Gross Net Depth to Net
Time Time Water Drop
PERCOLATION RATE
TEST RUN BETWEEN
CERTIFIED BY:
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION [] PERCOLATION
TEST
825 g Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEsT
DATE PERFORMED:
LECA, OESCR,PT,ON: ,/0 ¢
6
7
8
9
SLOPE SITE PL,
10-
11-
12-
13-
14
15
16
17
18
19-
20-
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
Reading Date Gross Net Depth to Net
Time Time Water Drop
PERCOLATION RATE
TEST RUN BETWEEN
CERTIFIED BY:
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION [] PERCOLATION
TEST
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
PERFORMED FOR:
LEGAL DESCRIPTrON: ~0 ~L ~_
DATE PERFORMED:
12
13
14
15
16-
17-
18-
19-
20-
COMMENTS
PERFORMED BY:
72-008 (6/79)
SLOPE 'LAN
WAS GROUND WATER S
L
ENCOUNTERED?
O
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time Water Drop
PERCOLATION RATE
TEST RUN BETWEEN
CERTIFIED B~
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION ~ PERCOLATION
SOILS LOG - PERCOLATION TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
1
2
3
4
5
6
7
8
9
10-
11
13-
14-
15-
16
17
19
2O
7-11 z
COMMENTS
l?
7///
DATE PERFORMED:
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
SLOPE SITE PLAN,L`
Reading Date Gross Net Depth to Net
Time Time Water Drop
5' .~.>' ~/5~ ~ ~ . Ol O, I
PERCOLATION RATE
TEST RUN BETWEEN
9'.~- ~ ./~ .
PERFORMED
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION'
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
,,J~' SOILS LOG
[] PERCOLATION
TEST
1
2
3
4
5
6-
7-
9-
10-
11
12-
13-
14-
15
16
17
18
19
20
COMMENTS
72-008 (6179)
5- 27
SITE PLAN
SLOPE
WAS GROUND WATER S
ENCOUNTERED? /'~0 ~
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
· ~ OF ~
PERCOLATION RATE ~ ,,~, ....,~s~h}
~"%, ~ · ~-~
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR:
°ATE PERfORM"O, //-/~- ?/
LEGAL DESCRIPTION:
2
3
4 J~,~¥y ~r~,,-~/
8
20
SLOPE
\
\
\
/
/
/
/
SITE PLAN
WAS GROUND WATER S
ENCOUNTERED? ~0 L
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
PERCOLATION RATE
nutes/inchJ
COMMENTS
TEST RUN BETWEEN
PERFORMED BY:
72-008 (6/79)
CERTIFIED BY
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG -- PERCOLATION TEST
~, SOILS LOG
[] PERCOLATION
TEST
PER"ORMED FOR: /-'--~,-, ? ~ ~:/~/'o
DATE PERFORMED:
LEGAL DESCRIPTION:
1
2
3
4
5
6
7-
8-
9-
10-
11
12-
13-
14-
15
16
17
18
19
20
COMMENTS
PERFORMED BY:
72~008 (6/79)
SLOPE SITE PLAN
WAS GROUND WATER S
ENCOUNTERED? ~ L
IF YES, ATWNAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time Water Drop
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
[] PERCOLATION
TEST
LE~A. OESCR~PT~ON: /~O'/ /~' ~'/Oe~ Z
1
2
3
4
5-
7-
8-
9-
10-
11
12-
13-
14-
15
16
~7
18
19
2O
COMMENTS
PERFORMED BY:
72-008 (6/79)
DATE PERFORMED:
SLOPE SITE PLAN
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
.I
Gross Net Depth to Net
Reading Date
Time Time Wator Drop
PERCOLATION RATE
TEST RUN BETWEEN
.[~ SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION [] PERCOLATION
. TEST
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
PERFORMED FOR:
DATE PERFORMED:
SLOPE SITE PLAN
DEPTH
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19-
20-
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
COMMENTS
PERFORMED BY:
72-006 (6/79)
PERCOLATION RATE
TEST RUN BETWEEN
CERTIFIED BY:~~E
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
[] PERCOLATION
TEST
SOILS LOG - PERCOLATION TEST
DATE PERFORMED:
LEGAL DESCRIPTION: /)(9 ~L Z O
1
2
3-
4-
5
6
7
8
9
SLOPE
SITE PLAN
10
11
12
13
14
15
16-
17-
18-
19-
20-
COMMENTS
PERFORMED BY:
72-008 (6/79)
WAS GROUND WATER S
ENCOUNTERED? ~
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
PERCOLATION RATE
OF ·
TEST RUN BETWEEN -
SOILS LOG
PERFORMED FOR:
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, A1aska 99501 264-4720
SOILS LOG - PERCOLATION TEST
LEGAL DESCRIF~TION: ,~ J/L
2
3
4 -
5~
6-
8-
10
12
14
~7-
20 -
· SLOPE
PERCOLATION
TEST
DATE PERFORMED: //-/?
SITE PLAN
COMMENTS
PERFORMED BY:
72-008 (6/7g)
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
Reading Date Gross Net Depth to Net
Time Time Water Drop
) ?.,Cb ~ o.~o
PERCOLATION RATE
TEST RUN BETWEEN
//- z_¢_ ¢~/
('~' ~'"'~ ~ SOILS LOG
PERFORMED FOR:
'E~^L OESCR~PT'ON:
4
5
6
7
8
9
11
12-
14-
15-
'16 -
17
18
19
20
COMMENTS.
PERFORMED SY;
72-008 {6/79)
MUNICIPALITY OF ANCHORAGE
[] PERCOLATION
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
TEST
825 L Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
DATE PERFORMED: //-- /7
~ geep
SLOPE SITE PLAN/. ~./
WAS GROUND WATER S
~NCOUNTERED? L
O
E
IF YES, AT WHAT
DEPTH?
Reading Date Gross Net Depth to Net
Time Time Water Drop
/ 12e,'d
PERCOLATION RATE ,~, ~tes/inch)
TEST RDN 9ETWEEN
CERTIFIED
PERFORMED FOR:
MUNICIPALITY OF ANCHORAGE
[] PERCOLATION
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
TEST
SOILS LOG - PERCOLATION TEST
LEGAL DESCRIPTION:
1
6-
7
8
9
10-
11
12
13
14
15
16
17
18-
19-
20-
COMMENTS /~ ~-~-~'1 ~ ~2
SLOPE
SITE PEAN /~. ;.~ ]~ ;%
WAS GROUND WATER S
ENCOUNTERED? /(Jo' ~
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time Water Drop
PERFORMED BY:
72-008 (6/79J
PERCOLATION RATE
TEST RUN BETWEEN
finch)
Dear Lee:
The soils tests for subject shows results as follows:
Lots 7 through 15 Block 3A show lots will support on-
site septic systems.
Lots 3 through 13 and 15, Block 2 show adequate soil
for on-site systems.
Lot 14, Block 2 shows high percolation rate of 312 sq. ft.'
or 55.5 m/in. Due to this high rate, an additional soil
and percolation test must be preformed to assure adequate
soils on the Lot.
Lee, on your next ~lase of the test, you cannot be inside ~le
100" creek setback. Also this Department must request deli-
neation of the setback and slope conditions at test hole
locations in this phase.
This office wishes to thank you for pointing out that the
creek locations are not as the topo indicates.
Sincerely,
John Lynn,
Environmental
Specialist
ALASKA
erlUlRonmenT^L CONTROL SeRUlCe$,
~in~rin~ ~ I~nuironm~ntal StuSi~
9-15-81
Mr. qohn Lynn
Municipality of Anchorage
Dept. of Health & Environmental Protection
825 L. Street
AnchoFage, Ak. 99501
Dear John:
Enclosed are the soils logs and/or percolation tests we have,
thus Far, completed for Ionjess Estates. Those completed are
Lots 7-19 (except il) Block 3 and Lots 3-9 & 13-15 Blocks 2,
Totaling 22 lots.
In general these soils have no limitations concerning septic systems.
One lot (lot 14, blk 2) did have limitations but we expect better
results with Further tests. If you have any questi'ons please call us.
President
MUNICIPALITY OF ~-,r-,~
A, .. O.AGL
DEPT. OF
AUG 1 51981
ENVIRONMENTAL PROTECTION
AUG 't 6 1981
RECEIVED
1220 LUCst 25tJ~ ~usnu~: * J~nchoro(l¢, Alaska 99503 · [907) 276-1361
SOl LS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG- PERCOLatiON TEST
[] PERCOLATION
TEST
/ SLOPE~ SITE PLAN
1
g'V
11 WASGROUNDWATER S
ENCOUNTERED? /V/O L
O
12 P
E
IF YES, AT WHAT
DEPTH?
13
Gross Net Depth to Net
Reading Date Time Time Water Drop
,JNiClPALITY O ANCHORAGE
DEPT. OF kAL ,:,
RECEIVED.
14
15
16
17
18
19
PERCOLATION RATE ch) '
,v~,f;,~. C_ TEST RUN BETWEEN ~ ,T AND i~ / (/'~' /
COMMEN*S,,,% ~L ?,,.~_ ~.9 [/o qf-'~/[~ g¢.~.~_ ?_ ~' ~ w
CERTIFIED BY: /-~'¢ ,'~ ," ¢>/
DATE:
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAl. PROTECTION
825 L. Street, Anchorage, A{aska 99501 264-4720
SOILS LOG - PERCOLATION TEST
PERCOLATION
TEST
LEGAL OESOR,PT,ON: %,~J~. ~St~X J
1
2 G/~.
$
4
$
7
8
9-
DATE PERFORMED: ~'- ~'~ ~ ~ L
10-
11
12
13
14
15
16
17
18-
19-
20-
SLOPE
SITE PLAN
N
WAS GROUND WATER S
ENCOUNTERED? /~'o (~
P
E
IF YES, AT WHAT
DEPTH?
Reading Date Gross Net Depth to Net
Time Time Water Drop
MUNICIPt LITY OF ANCH )RAGE
DEF r. OF HEALTH
ENVIROh AENTAL ¢,,~T~ :TION
A:3 1U 19~1
:'rCEIVED.
72-008 (6/79)
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
[] PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
1
2
3
4
5
6
7
8
9
10
11
C
Coo
13-
14-
15-
16-
17
18
19
2O
COMMENTS
SLOPE
SITE PLAN
WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
MUNICIP, ,LJTY OF ANCF ORAGE
DE I. OF HEALTH ~
ENVIRO M~NIAL Y,,.;It L.I K)I~t
.J,~ 1 6 19!11
: ,-CEIVED
PERFORMED BY: ~
CERTIFIED BY: ~/~'~ ~-
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVlRONIVIENTAL PROTECTION
825 L. Street, Anchorage, AIasEa 99E01 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
[] PERCOLATION
TEST
LEGAL DESCRIPTION:
1
2
3
4
5
6
7
8-
9-
10-
11
12
13
14
15
16
17
18
DATE PERFORMED:
SL'~P E SITE PLAN
/
/
/
/
/
/
/
/
/
/
/
20-
COMMENTS
WAS GROUND WATER
ENCOUNTERED? /~0 ~
O
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time Water Drop
MUNICIPALI ry OF ANCHO,
DEPT. OF HEALTH &
ENVIRONM !NTAL P,~,OfEC1
AU; 1 b 1931
PERFORMED BY: DAk~
CERTIFIED BY: Lee_ /c-*~_/¢/
DATE:
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAl. PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR: '~/'/ I ~'~
LEGAL DESCRIPTION:"~',~A/ I ~
7
8
9-
10-
11
12
13
14
15
16
17
18
19-
20-
2 GItX~
3
4
/ SLOPE~
DATE PERFORMED:
L,.'/-
SITE PLAN
?
WAS GROUND WATER
ENCOUNTERED? ~o ~
0
P
IF YES, AT WHAT E
DEPTH7
Reading Date Gross Net Depth to Net
Time Time Water Drop
.... ~'/ O~ ANCHO~'AG~
~QNN~EN~AL r,
PERCOLATION RATE
TEST RUN BETWEEN
~'/o cf-*- Io.,,?~,,.,,.,., '5.';-~.; ~ iz~.
CERTIFIED BY:
DATE:
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
[] PERCOLATION
TEST
LEGAL DESCRIPTION:
1
2
3
4
5
6
7
8
9
10-
11
13
14
15
16
17
18
19-
20-
DATE PERFORMED:
I¥
COMMENTS
ENCOUNTERED? O
SITE PLAN
IF YES, AT WHAT
DEPTH?
/v T:
P
E
Reading Cate Gross Net Depth to Net
Time Time Water Drop
PERCOLATION RATE
DATE:
72-008 (6/79)
,:-h /
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG -- PERCOLATION TEST
~' SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR: ~/~/J~<'<j
LEGAL DESCRIPTION:
2
SLOPE
10-
11
WAS GROUND WATER S
ENCOUNTERED? /~z~t2~ ~
P
E
IF YES, AT WHAT
DEPTH?
DATE PERFORMED:
SITE PLAN
12
Reading Date Gross Net Depth to Net
Time Time Water Drop
:Ct~, ,,
13
14
15
16
17-
18-
19-
20-
DEP
ENv~Ob
PERCOLATION RATE
TEST RUN BETWEEN
~.-f-- I~o C~'?
72-008 (6/79)
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
[] PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION: ~/'~ ?Vj o ~< ,~-
1
2
DATE PERFORMED:
SITE PLAN
10-
11
13-
14
15
16
17
18
19
20-
COMMENTS
WAS GROUND WATER S
ENCOUNTERED? /{/O oL
P
E
IF YES, AT WHAT
DEPTH7
Gross Net Depth to Net
Reading Date Time Time Water Drop
· DE
/
DATE;
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
525 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
1
2
3
4
5
6
7
8-
9-
)
G/V
DATE PERFORMED:
SLOPE
SITE PLAN
10-
11
12
13
14
15
16
17
18-
19-
20-
WAS GROUND WATER S
ENCOUNTERED? ~"~ 'Z. /¢o °L
P
IF YES, AT WHAT ~ / E
DEPTH? -'~ H.~ '-
Gross Net Depth to Net
Reading Date
Time Time Water Drop
CEiV :D
MUNICIPAL
DEPT
ENVIP. ONi'
AL
R£
TEST RUN BETWEEN
72-008 (6/79)
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
[] PERCOLATION
TEST
PERFORMED EOR:
LEGAL DESCRIPTION:
1
3-
4-
§-
6 - G
7
8
9
10
11
12
13
14
15
16
17
18
19
20-
Lot
SLOPE
COMMENTS
DATE PERFORMED: ~ - '~ - ~:~ J
SITE PLAN
WASGROUNDWATER ~
ENCOUNTERED? /~O ~1
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
A. UNICIPALITYI OF ANCHOR
ENVIRONMEN ~AL Pi,,:; ~:-CJi
AUG 1_ 6
RECI IV[D
/' 1/ 2'/
TEST RUN BETWEEN , FT AN ~ FT ./
DATE:
72-008 (6/79)
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
[] PERCOLATION
TEST
PERFORMED FOR:
~ P ,~,~, cobble.~
4-
5
6
7
8
9
10
11
12
13
DATE PERFORMED:
WAS GROUND WATER S
ENCOUNTERED? /~/(~ L
IF YES, AT WHAT
DEPTH?
SITE PLAN
14
15-
16-
17-
18-
20-
COMMENTS
Reading Date Gross Net Depth to Net
Time Time Water Drop
ENVIRO qMENTAL P,,~
,11~ 1 fi '~!~!
~1CEIV:D
TEST RUN BETWEEN FI~AAND'~ FT ,
CERTIFIED BY: ~. /~zC¢/'
DATE:.
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND E~VlRONME~TAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
SOl LS LOG
PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
1
2
5
6
7
8
9
10
11
14-
15-
16-
17
18
19
2O
SLOPE J
DATE PERFORMED:
SITE PLAN
COMMENTS
ENCOUNTERED?
IF YES, AT WHAT
DEPTH?
Reading Date Gross Net Depth to Net
Time Time Water Drop
v~UN~J~IPALIT OF ANCHO !AG.~
-bERT. ~'H~',~¥;'~/~
ENVIRONME 4TAL P,,'~, C
/ 10: Z7
PERCOLATION RATE //0/- ~ (minutes/inch)
TEST RUN BETWEEN ~ ~'/~¢ FT AND FT
CERTIFIED BY: ~-'~q-
DATE:
72-OO8 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99S01 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
PERCOLATION
TEST
3 h
4-
5
6
7
8
9
10
11
12
13
14
15
16-
17-
18-
19-
20-
o AZ,
SLOP~E
DATE PERFORMED:
SITE PLAN
G
COMMENTS / O-,~~Z--~ ~"~-
WAS GROUND WATER // S
ENCOUNTERED? /~/o L
O
P
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
Time Time Water Drop
o ?--/~/-~( z?-:~ ¢, ~ ~ 79' '"'~
PERCOLATION RATE ~--~ ~~'a
TEST RUN BETWEEN ~ ~r~-G FT '
DATE:
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
-/
/
SOILS LOG
PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION: ~/,/~f~,~"
1
2
3
4
5
6
7
8
9
10-
11
13-
14-
15
16
17
18
19
20
COMMENTS
DATE PERFORMED:
SLOPE
DUNTERED? /Q/-O
IAT
SITE PLAN
eading Date Gross Net Depth to Net
Time Time Water Drop
0 ?../y-e,/ 1:2~' .~. ~,'7~' -~__,
t I:~ /0 .'7~¢,9~
PERCOLATION RATE '~-~ ' ~ ~) ~
TEST RUN BETWEEN dK' F
PERFORMED BY: D,~/v' //v~ -~dJ~/'~z~/q'~
CERTIFIED BY:/.~Z?,~
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99~01 264-4720
SOILS LOG -- PERCOLATION TEST
SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
5
6
7
8
9--
10
11
12
13
14
15
16
17,
18-
19-
20-
0/V\
ML
COMMENTS
~SLOPE''J
PERFORMED BY: /~
WAS GROUND WATER l / S
ENCOUNTERED? /V-.~ L
O
P
IF YES, AT WHAT E
DEPTH?
DATE PERFORMED:
SITE PLAN
Reading ML~(~PALIT ~mS~NcHOg,! ~et Depth to Net
~lme Water Drop
DEPT. td~^a
~NVIRONME TAL Pi,~i.C:& ~l
RECEIVED
PERCOLATION RATE
TEST RUN BETWEEN
72-008 (6/79)
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
PERCOLATION
TEST
PERFORMED FOR:
LEGAL D ESCR I PTI O N: ~/~¢~Jd~ -S~
1
2
3-
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18-
19-
20-
SLOPE
DATE PERFORMED:
SITE PLAN
WAS GROUND WATER /~//(:~ S
ENCOUNTERED? L
0
P
E
IF YES, AT WHAT
DEPTH?
Reading Date Gross Net Depth to Net
Time Time Water Drop
~UN[CIPALIT OF ANCHORA ~2
DEPT. HEALTH &
FNVIRONME TAL PR.H~C'[~C
AUG1 6 1981
RE
PERFORMED BY: i~,~
CERTIFIED BY: /-.er- ,('~¢.c(~
72~008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
[] PERCOLAT[ON
TEST
PERFORMED FOR: ~/~/~.~ ~- ~
LEGAL DESCRIPTION: ~OJJ..) ~'~.~
o/,~
3'--
4 5/'v'L
5
6
7
8
9
10
11
12
13
14
15-
16-
17-
18-
19-
SLOPE
DATE PERFORMED:
SITE PLAN
~ )< FI l
WAS GROUND WATER ~
ENCOUNTERED? /~//0 ~
E
[F YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
~UNICIPALHY C ANCHORAG2
DEPT, OF EE, l;.I &
ENVIRONMI:NIt F -; LC~';C~
AUG 1 ,5 !g~,l
RECEIVED.
20
PERCOLATION RATE
T~J~~' TEST RUN BETWEEN FT AND FT
PERFORMED BY: ~A~ ~ C ~A~ ~/~ CERTIFIED BY:
72-008 (6/79)
~
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
/* SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR:
4-
5-
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20-
SLOPE
DATE PERFORMED:
SITE PLAN
/,, fO'
ENCOUNTERED? (~
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date Time Time Water Drop
/~UNICIPAL fY OF ANCHO !AC:2
DEPI OF HEALf.~
.ENVIRON/ ENTAL
AL316!9::1
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
SOILS LOG
[] PERCOLATION
TEST
PERFORMED FOR: DATE PERFORMED:
SLOPE ~ SITE PLAN
o/~
1
5
6
7
10
11
13
14
15
16
17,
18-
20-
WAS GROUND WATER~//o S
ENCOUNTERED? L
O
P
E
IF YES, AT WHAT
DEPTH?
Gross Net Depth to Net
Reading Date
,LTII,q~iPALITY )F T/I~i~HORAC Water Drop
r
ENVIRONMENT IL P,,') ;LC:lC?
REC[IVED
COMMENTS r/t,~L,'~'~ D~v'~. ~..~
PERCOLATION RATE
TEST RUN BETWEEN
~ IOO~'f~?~
PERFORMED BY: ~A,~'
CERTIFIED BY: ~-e.~ ~'~'~z~Z/
; 72-008 (6/79)
SOILS LOG
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAl. PROTECTION
825 b. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION:
3-
4
5
8
10
14-
18-
20-
COMMENTS
DATE PERFORMED:
SLOPE / SITE PLAN
/
r\9~ 0'; ,,~ ' WA~,~ROUND WATER
/',,'7-5
/
Gross Net Depth to Net
Reading Date
Time Time Water Drop
o ?-/V-~/ //...// -~ , '7.~ -
/ /z. :.n./ /0 . -37//" .
PERCOLATION RATE ~' ~ (minutes/inch)
TEST RUN BETWEEN ~" PT AND ~c~ FT
PERFORMED BY: ~/~/ /V~,):-. :~/~(~'~z~/,~~
CERTIFIED BY: J~ ~ f~.Z¢~/
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99§01 264-4720
SOILS LOG - PERCOLATION TEST
PERCOLATION
TEST
PERFORMED FOR: ~/~/'/ I ~'
LEGAL DESCRIPTION:
1
2
3-
4-
7
8
10
12
13
14
15
16
17
18
19
20
COMMENTS
SLOPE
IF YES, AT WHAT
DEPTH?
DATE PERFORMED:
/_°7- /¢
SITE PLAN
S
Gross Net Depth to Net
Reading Date Time Time Water Drop
o 9./~t.¢/ q;-'.,, z ~ .~o ~
-'?,~ f~:o3 // .770 ,0t,~
RATE ~'~-'~ ~ (minutes/inch)
TEST RUN BETWEEN '~" FT AND c~ FT
PERFORMED BY: Z~A/~' /VtA( ~J~/_~
CERTIFIED BY: /.e~
72-008 (6/79)
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG -- PERCOLATION TEST
[] PERCOLATION
TEST
PERFORMED FOR:
LEGAL DESCRIPTION: '~?-/,.) ~,~'
1
2
3~
SLOPE SITE PLAN
10
11
12
13
14
15
16
17
18
19
20-
COMMENTS
AdTY
/<Z'o s
E ~
~v Gross Net Depth to Net
Reading Date Time Time Water Drop
PERCOLATION RATE ~~
TEST RUN BETWEEN ET A / , ~ /
72-008 (6/79)
ii/
DATE:
TO:
FROM:
SUBJECT:
Mut dpgHty o[ Anchorage
MEMORANDUM
April 14, 1981
Planning ]Department
Health and Euvironmental Protection
Lots 1, 2, ].0, 11, 12 Block 2 Tonjess Estates Subdivision
Review of Soils 'Pests
This department recon~ends combining Lot 12 Block 2 with
Lot 11 Block 2 or any other lots adjoining~Low 12 due to
/he poor soJ_l conditions on Lot 12. All lots as, Lot 1,
2~ 10~ 11 Block 2, will support on-site septic system
using a soils ratin9 of 175 square foot per bedroom.
If there are any further questions, please call this
office at 264-4720.
John W, Lynn
Environmen'_al Specialist
JWL/ljw
cc: Bob Grief
FIELD LOG
CLIENT ,f,~' , ,':'i~ /' ~%?.,' i
LOGGED BY
ORILLING CONTRACTOR ; [?
DRILLER
EQUIPMENT -"
SOIL DESCRIPTION
WORK ORDER NO. / )/'-' '~
DATE '~/ / ' -'"
TIME START
TIME FINISH
WATER LEVEL -~--TIME
SHEET / OF
COMMENTS
' :'~'~E S~.~A~ FIELD LOG _ ~,~,~- B~-~
'TE BORING NO, '~ ~/~
:~" ,,~ALA . _
~ CLIENT ~'; ~ ~ J~'~)~ WORK ORDER NO,
ELEVATION =
ORILLING CONTRACTOR z',,,/,/ TIM~ ~ART
EQUIPMENT ~ ~ '2 WATER LEVEL .~ TIME
SOIL DESCRIPTION COMMENTS
ELEVATION
FIELD LOG
LOGGEI~ OY [,
DRILLING CONTRACTOR
SAMPLER ~ , z
SOIL DESCRIPTION
BORING NO, / / ;~.
WORK ORDER NO./_'
DATE ~/ J-" *' /
TIMg ~TART
TIME ~'INISH
WATER LEVEL TIME
SHEET OF
COMMENTS
FIELD LOG
CLIENT i ~ ~,,
ggG~EO BY ,.-'-"
_DRILLING CONTRA(.?OR '/ .
.DRILLER i _ ,,
_EQUIPMENT ,.,
SAMFLER
SOIL DESCRIPTION
B__ORING~NNO, /,"-? '=-//~='
'
WORK ORDER NO, ,,,
DATE .,-,./ ,7 ,,.-'
TIME b~TART
FINISH
WA.~T ER LEVEL TIME
SHEET OF
COMMENTS .
ELEVATION
FIELD LOG
c~Em- j, ,,~ /
LOGGEO BY
DRILLING CON,tRACTOR
DRILLER z
EOUIPMENT
SAM~ER
SOIL DESCRIPTION
BORING NO,A~.' ~'--
WORK ORDER NO. /~/~,~ ~ ,~
TIMg ~ART
TIME FINISH'
WATER LEVEL~ TIME
SHEET OF
COMMENTS
//
ELEVATION
· FIELD LOG
DR~LUNG CONTRACTOR
DR~LLER
EQUIPMENT //~
SOIL DESCRIPTION
BmR NG NO.
WORK ORDER NO,
TIB~ ~TART
TIME FINISH
WATER LEVEL ~ TIME
SHEET OF
COMMENTS
ELEVATION;
FIELD LOG:
CLIENT
~RILLiNG CON~CTOR
ORILLER ~'
EQUIPMENT ·
SOIL DESCRIPTION
BORING NO, ~
WORK ORDER NO. _./-/)/0~ ~,- d,
TIME FINISH
WATER LEVEL ~-TIME
SHEET OF
COMMENTS
?"e ~ 7 /.4 /~
ELEVATION
FIELD LOG
CLIENT ..] ~'.~r '/ ~'~'~'dC -~'
LOGGED BY
DRILLING CO~RACTOR
DRILLER
EQUIPMENT
SAMPLER
SOIL DESCRIPTION
BORING NO. ,_'~
WORK OROER
DATE ~/'
TIME ~F/'A R T
TIME FINISH
WATER LEVEL'''"''~- TIME
SHEET OF
COMMENTS
5-'
G-
7-
8-
9-
AC
I. lAC,
/
...... O~ Ai
825 'L" STREET
ANCHORAGE, ALASI<A 99501
(907) 264-4111
GEORGE M, SULLIVA~-L
MAYOR
DEPART~vlEN'¥ OF HEALTH AND ENVtF3ONtv]ENTAL PROTECTION
April 7, 1981
DOWL Engineers
4040 B Street
Anchorage, Alaska
99503
Attention: Robert P. Grier, P.E.
Subject: Response to your letter dated April l, 1981
regarding additi'onal soils test; Tonjess Estates
Engineers have the responsibility to respond to request
for additional soils information on platting proposals.
Per our conversation, March 25,:1981, this department
requested soils and necessary perc test on Lots 2 and
12 Block 2 of the Tonjess Estates Subdivision proposal.
This request is made due to the fact that an additional
parcel of land; Lots 1, 2, 10, li, 12 Block 2~ in which
no soils work up was received by this department, has
been added to the origina_J~a~(Prince Acres).
~~ ~l~~~~ns, please call this office
at 264-4720.
Sincerely,
John W. Lynn
Environmental Specialist
WL/LN /1 j w
cc: JoAnn Contreras
Planning Department
Les No Buchholz, S.S.
Senior Environmental
Spedialist
~ '~ \ ANCHORAGE, ALASKA 99503
4M~RI% TEST~B) ' ' (907) 278-~55~ '
OlO766
Mr. Jesse L. Prince Jr. and
Mr. Tony Schaff
P.O..Box 467
Girdwood, AK 99587
Subject: Subsurface Information for Tonjess Acres
Gentlemen:
The recommendations which indicate the suitability of each lot
in the above subdivision for individual waste water treatment
systems, are organized as follows:
Lot and Block Report Color
Numbers Date Code
Block 1 - Ail 9-11-78 White
Bloqk 3 - Lots 1-5 9-11-78 White
Block 2 - All 7-5-78 Blue
Block 3 - Lots 6-24 7-5-78 Blue
Test hole logs with accompanying reports are color coded
as follows:
Test Hole Report Color
Numbers Date . Code
26-39 9-11-78 White
14-25 6-28-78 Gold
1-13 5-2-78 Green
Idealized soil profiles are near the back of the 6-28-78
(gold) report. Test holes locations are shown on the
accompanying preliminary plat.
Very sincerely,
RMH:rb
,Enclosures
Melvin R. Nichols, P.E.
Laboratory Manager
AI2%SKA TESTLAB
4040 "B" STREET
ANCHORAGE, ALASKA 99503
(907) 278-1551
Mr. Jesse L. Prince Jr.
Mr. Tony Schaff
P.O. Box 467
Girdwood, AK 99587
Subject:
September 11,
W.0o #D10766
and
1978
Subsurface Investigation for Proposed
Tonjess Acres Subdivision (formerly
proposed as Prince Acres Subdivision)
Located within the SW 1/4, Section 2,
T.15N., R.1W., Seward Meridian~ Alaska
MUNICIPALITY OF ANCHORAGE
DEPL OF HfiAL'r}i &
ENVIRONMENTAL PROTECTIOIX[
MAt 9 1981
RECE.! FD
Gentlemen:
We have now completed the additional testing in Area B of
the proposed project as outlined in our report of July 5,
1978. Included with this'transmittal are the following:
Test Hole Logs
Standard Explanatory Information
Preliminary Plat with Test Hole
Locations
Table A
Sheets 1-3
Drawing 121-28
Each lo~ in the arba investigated with the exception of
Lot 1, Block I, is suitable for an on-site sewage treatment
system~
One or more test holes were placed on each lot in Block 1,
(with the exception of Lot 7 which already had a suitable
test hole) and on Lots 1-5, Block 3. Six percolation tests
were performed. The results of percolation tests are as
follows:
Test Hole No.
29
31
33
35
36
38
Minimum Percolation Rate
5 minutes/inch
4.4 minutes/inch
27 minutes/inch
5.0 minutes/inch
3.1 minutes/inch
5.7 minutes/inch
Our recommendations for septic tank absorption system design
values, along with the test holes upon which these values
are based, are tabulated below:
June 30° 1978 File No.: P83
Jerry Weaver - Planning Depar~nent
Environmental Engineering - Depto of tlealth & Environmental Protection
Soils & Percolation Information - Prince Acres Subdivision
Regarding info~]ation for Prince Acres Subdivision based on the
225 sqoft, per bedroom rate - we have received no information on
Percolation Test on this subdivision to date. They must be reviewed
prior to Approval of Plato We m~]st have Percolation Tests on all
225 sqo fro rated soils.
If there are any questions regarding this, contact the undersigned.
Phone: 264-4681o
John Wo Lynn
Environmental Engineering
J~'lL:lmp
is
'Mr. Jesse L. Pr%z~%e, Jr. and
Mr. Tony Schaff
September 11, 1978
Page 2
BLOCK
Lot
Test Hole
17, 18, 26, 27
28
2 22, 23, 29, 30
3 24, 25, 31
4 32
5 33
6 34
7 20, 21
Recommended Design
Percolation Rate.
Not Recommended
10.0 minutes/inch
5.0 minutes/inch
.15.0 minutes/inch*
27.0 minutes/inch*
1.5.0 minutes/inch*'
5.0 minutes/inch
BLOCK ' 3
I 8, 35
2 8, 36
3 37, 38
4 38, 39
5 39
5.0 minutes/inch
'5.0 minutes/inch
5.7 minutes/inch
5.0 minutes/inch
5.0 minutes/inch
We expect these values to be conservative. After the
absorption trench is excavated, we recommend.inspection
of the trench walls and a possible ~eduction of the area
depending on the.soil type encountered.
Subsurface investigation was conducted on August 24-29, 1978
and consisted of 14 test holes. A Nodwell mounted Mobile
Drill B-50 rig equipped with a solid flight auger was used
for the exploration. Test holes were logged and located in
the field by Mr. T.L. Barber, geologist with Alaska Testlab.
Percolation tests were performed by Mr. Barber and Mr. T.A.
Sexton, geologists with Alaska Testlab.
The soil most generally encountered was a silty sandy gravel.
This material was quite dense and contained occasional
'cobbles. Thus, it offered considerable resistance to drilling.
Test Holes ~32 and #34 did not have percolation tests run
because'the holes caved in after withdrawing the auger.
Mr. Jesse L. PriP~'e, Jr. and
Mr. Tony Schaff
September 11, 1978
Pag~ 3
When drilling was completed a 3/4" slotted PVC pipe was
inserted in the hole to aid in determining the water level.
The hole was filled with water and left overnight to saturated.
On returning the next day the hole was refilled with water
and the water level in the hole carefully monitored for the
next 60 minutes. The observed minimum percolation rates are
tabulated above.
We trust the above meets your present requirements. If you
have any questions or if we may be of further assistance,
please do not hesitate to contact us.
Very sincerely,
ALASKA TESTLAB
'RMH:rb
Enclosures
Melvin R. Nichols, P.E.
Laboratory Manager
Test Hole #26
Table A
WO #D10766
Logged By: T.L. Barber
Date: 8-24-78
~epth in Feet
From To
0.0' - 2.5'
2.5' - 11.0'
11.0' - 16.0'
Soll DeScription
Brown Peat (Pt), wet, soft.
F-4, brown Sandy Silt (ML), with fine sand
fraction, damp to saturated, stiff, Pl!,
contains thin layers of fine to medium sand,
wet to saturated below 7'
F-4, grey Sandy Silt (ML) with fine sand
fraction, saturated, stiff, Pi~. Trace gravel
at 15'.-
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
None Observed
8'~0'
.. Sample Depth
1 5.0'
2 10.0'
3 16.0'
Type of Dry
M% Sample Strength Group Unified
G
Remarks: 1.
e
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and. Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole '#~7
Table A
WO #D10766
Logged By: T.L.
Date: 8~24-78
Barber
Depth in Feet
From To
0.0' - 2.0'
2.0' - 10.0'
Soil Description
Brown Peat (Pt), wet, soft.
F-4, brown Sandy Silt (ML), with fihe sand
fraction, damp to saturated, stiff, NP to
PL~.
'~ottom of Test Hole:
Frost Line:
Free Water Legel:
10.0'
None Observed
5.0'
Sample Depth
I 5.0'
2 10.0'
Type of Dry
M% Sample Strength Group Unified
G
G
Remarks: 1.
e
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #28
Table A
WO #D10766
Logged By~ T.L.
Date: 8-24-78
Barber
Depth in Feet
From To
0.0' - 2.5'
2.5' - 10.0'
Soil Description
Brown Peat (Pt), wet, soft.
F-4, brown Sandy Silt (~), with fine and
medium sand, wet, saturated below 5', stiff,
Pi+.
Bottom of Test Hole:
Frost Line:
Free Water Level:
10.0'
None Observed
5.0'
Sample Depth
1 5.0'
2 10.0'
Remarks: 1.
3.
4.
5.
6.
Type of Dry
M% Sample Strength Group Unified
G
G
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #29
Depth in Feet
From To
0.0'.- 4.0'
4.0' - 10.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
1 ° 5.0'
2 10.0'
Remarks: 1.
4.
5.
6.
Table A
WO #D10756
Logged By: T.L.
Date: 8-24-78
Barber
Soil Description
Brown Peat (Pt), wet, soft.
F-4, grey to olive Sandy Silt (ML), with fine
sand fraction, wet, stiff, PL+.
10.0'
None Observed
None Observed
Type of Dry
2~% Sample Strength Group Unified
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to-similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #30
Table A
WO #D109~6
Logged By: T.L.
Date: 8-24-78
Barber
Depth in Feet
From To
0o0' - 0.8'
0.8' - 8.5'
8.5' - 16.0'
Brown Peat
F-4, brown
wet, stiff,
Soil Description
(Pt), wet.
Sandy Silt (ML), with fine Sand,
PL~, trace gravel at 6.5'.
F-l, brown Silty Sandy Gravel (GM), wet, very
dense, sharp particles to 1"
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
None Observed
None Observed
Sample Depth
1 5.0'
2 15.0'
Type of Dry
M% Sample Strength Group Unified
G
G
Remarks:
me
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #31
Depth in Feet
From To
0.0' - 0.5'
0.5' - 9.0'
9.0' o 11.0'
11.0' - 16.0'
Table A
WO#D10766
Logged By: T.L.
Date: 8-24-78
Barber
Soil Description
Brown Peat (Pt), damp,
F-4, brown Sandy Silt
stiff, Pi~.
F-2v brown Silty Sand
wet, medlual densit-~.
F-l, brown very Silty Sandy Gravel
dense, subrounded particles ~
soft.
(~), damp to wet,
(SM), medium grained,
(GM), wet,
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
None Observed
None Observed
Sample Depth
1 5.0'
2 '10.0'
3 16.0'
Type of Dry
M%~ Sample Strength Group Unified
G
G
Remarks:
1. Type of Sample, G=Grab,' SP = Standard Penetration,
U = Undisturbed.
2. Dry Strength, N=None, L=Low, M=Medium, H=High.
3. Group refers to similar material, this study only.
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified'Classification, see Sheet 3.
Test Hole #32
Depth in Feet
From To
0.0' = 0.5'
0.5' = 13.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
1 5.0'
2 10.0'
Remarks: '1.
®
3.
4.
5.
6.
Table A
WO #D30766
Logged By: T.L. Barber
Date: 8-31~78'
Boil Description
Brown Peat (Pt), damp, soft.
F-l, brown very Silty Sandy Gravel
occasional cobbles, damp, dense.
13o0'
None Observed
NOne Observed
Type of Dry
M% Sample Strength Group Unified
G
G
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=}4edium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, .see Sheet 3.
Test Hole #33
Depth in Feet
From To
0.0' - 0.5'
0.5' - 10.0'
10.0' - 16.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
~ample Depth M%
1 5.0'
2 10.0'
3 16.0'
Remarks: 1.
3.
4.
5.
6.
Table A
WO #D10766
Logged By: T.L.
Date: 8-28-78
Soil Description
Brown Peat (Pt), damp to wet, soft.
F-l, brown Silty Sandy Gravel (GM), occasional
cobbles, damp, dense.
F-4, brown Sandy. Gravelly Silt (GM), damp, very
hard, NP. Sharp and subrounded particles.
16.0'
None Observed
None Observed
TYPe of Dry
Sample Strength Group
G
G
G
Unified
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Barber
Test Hole #34
Depth in Feet
From To
0.0' ° 1.0'
1.0' - 14.0'
Table A
Logged By: T.L. Barber
Date: 8-29-78
WO #D10766
Soil Description
Brown Peat. (Pt), damp, soft.
F-T, brown slightly Silty Sandy Gravel
damp, dense, subrounded and rounded particles
to 1-1/2".
Bottom of Test Hole:
Frost Line:
Free Water Level:
14.0'
None Observed
None Observed
Sample Depth
5.0'
10.0'
14.0'
Type of Dry
M% Sample Strength Group Unified
Realarks: 1.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole ~35
Depth in Feet
From To
0.0' ~ 1.0'
1.0' - 3.0'
3.0' - 8.0'
8.0' - 13.0'
13.0' - 20.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Table A
WO #D10766
Logged By: T.L. Barber
Date: 8-31-7.8
Soil Description
Brown Peat (Pt), damp, soft.
F-2, brown very Silty San~ (SM), trace gravel,
fine and medium grained, dry, medium density,
subrounded and rounded particles to 1".
F-l, brown Silty Sandy Gravel (GM), dry, very
dense, subround~d and rounded particles to 1-1/2".
F-4,'brown Sandy SiLt (ML), with fine and medium
sand, damp, hard, NP.
F-2, brown Silty Sand (SM), slightly gravelly,
damp to saturated, medium density, subrounded
and rounded particles to 1".
20.0'
None Observed
18.0'
Sample Depth
1 5.0'
2 10.0'
3 15.0'
Type of Dry
M~ Sample Strength Group Unified
G
G
G
Remarks: 1.
me
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, ~=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test 'Hole 936
Table A
WO #D10766
Logged By: T.L. Barber
Date: 8-29-78
Depth in Feet
From To
0.0" - 1.5'
1.5' - 10.0'
10.0t - 14.5'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Soil Description
Brown Peat (Pt), wet, soft.
F-l, brown slightly Silty Sandy Gravel
occasional cobbles, damp, dense.
F-T, brown very Silty ~andy Gravel
occasional cobbles, damp, dense.
14.5'
None Observed
None Observed
(GM)
(GM),
Sample
1
Depth
Type of Dry
M% Sample Strength Group Unified
G
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet ]o
Frost and Textural Classification, see Sheet 2.'
Unified Classification, see Sheet 3.
Test Hole #37
Table A
Logged By: T.L.
WO #D10766
Date: 8-26-78
Depth in Feet
From To
0.0' - 0.5'
0.5' ~ 10.5'
Soil Description
Brown Peat (Pt), wet, soft.
F-l, brown Silty Sandy Gravel (GM),.damp to
wet, dense, subrounded and rounded partiCles,
cobble at 10'.
Bottom of Test Hole:
~rost Line:
Free Water Level:
10.5'
None Observed
NoDe Observed
Sample Depth
1 5.0'
2 10.0'
Type of Dry
M% Sample Strength Group Unified
G
G
Remarks: . 1.
me
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information', see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classificatign, see Sheet 3.
Barber
~est ~ole #38
Table A
WO #D10766
Logged By: T.L.
Date: 8-28m78
Barber
Depth in Feet
From To
0.0' D 0.5'
0.5' ~ 14'0'
Soil Description
Brown Peat (Pt), soft.
F-l, brown Silty Sandy Gravel (GM), 'damp,
very dense, subrounded and rounded particles.
Bottom of Test Hole:
Frost Line:
Free Water Level:
14.0'
None Observed
None Observed
Sample Depth
1 14.0'
Type of Dry
M__% Sample Strength Group Unified
Remarks: 1.
me
3.
4.
5.
6.
Type.of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #39
Depth in Feet
From To
0.0' o 0.5'
0.5' ~ 16.0'
~..
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth M%
1 5.0'
2 10.0'
3 15.0'
Remarks: 1.
3.
4.
5.
6.
Table A
WO #D10766
Logged By: T.L. Barber
Date: 8-28-78
Soil Description
Brow~ Peat and Silty Sand (Pt), damp, soft.
NFS, brown slightly Silty Gravelly Sand (SP
to SP-SM), damp, fine and medium ~rained,
medium density, subrounded and rounded
particles to 3/4".
16.0'
None Observed'
None Observed
Type of Dry
Sample Strength Group Unified
G
G
G
Type of Sample, G=Grab, SP = Standard Penetration,
U = UDdisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification,.see Sheet 3.
Test Hole Log - Description Guide
The soil de~criptiofls shuwn on the Inga are the best estimate of the ~oil's
ha~acteristics at the time of field examination and as suck do not achieve the
r~ recision of a laboratory testing procedure. If the log includes soils samples,
i.~ose ~amples receive an independent textural classification in the laboratory
~o ~erify the field examinatmn.
[ I'he Inca often include the foUowin8 items:
Depth Interval - usuat~y shown to 0.1 foot, wkkin tkat zone no
lignificant change in soil type was observed through drill action, direct
observation or sampling.
Frost Classification - NFS, Fl, F2, Fa, F4, Me "Soil Classification
Chart"
Texture of Soil - An engineering classification of the soils by particle
size and proportion, see "Sod Classification Chart". note the
proportions are approximate and modifications to the sod group due to
stratification, inclusions and ckanges il~ properties are included.
Moisture Content - this is a qualitative measure:
city, no or little apparent surface moisture,
damp, moisture forms portion of color, less than plastic limit,
wet, no free water, often soft, if cohesive soil,
~atutated, free water may be squeezed out, ifa free draining soil:
dilgtent at natural moisture content, if a non-plastic silt or fine
sand. (Thc moisture content is further dcfinedby reference to PI.
LW, NP, M%or dilatency.}
mixtures with or without a fine fraction, derived from drilling action
and/or sample data; usually described as: very loose, loose, medium
dense, very dense. Gea~eral intent is tq portray eartkwork
Stiffness -- refers to more-or-less cohesive soils and fine grained silts of
the clay-silt groups. Derived from drill action and/or sample data. Very
soft, soft, stiff, very stiff and hard are commonly used terms.
Particle size - The largest particle recovered by the split spoon is
1-3/8". Shelby tube Y'. auger flights (minute-man} 2", Auger flights
(B-S0 hollow stem} 6"-8". Larger particles are described indirectly by
action of the drilling and are referred to as cobbles, 3" to 8", or
boulders 8"+. Therefore when reviewing the gradation sheets, if any.
the description on the hole log must be considered for an indication of
hrgar particles.
Unified Soil Classification - This is a two letter code. See Unified
Clarification sheet /'or ftirther definition. In some cases f~.~SHO and/or
FAA ~oil classifications may be ~hown as wcil as thc unified.
Atterbcrg Limits - useful for fine grained and other plastic soils.
P. Jl; natural moisture content believed to be less than plastic limit
P~+; oatuzal moisture content believed to be between plastic and liquid
I/mits
L_=_~i ~atura[ moisture content believed to be see·tee than liq;qd limit
NP; ~on-plastic, useful as · modifying description of some silty
~t&tlalL
_Dilateflcy - is the ability of water to migrate to the surface of ·
Rock flour - finely ground soil that is not plastic but otherwise appears
similar to a clayey silt.
Organic Content - usually described as Peat· PT, sometimes includes
of all otc·mc, -- as Peat. This may include tundra, muskeg and bog
Muck - a modifier used to describe very soft. semi-organic deposits
usually occuring below a peat deposis.
Amorphus peat -'organic particles nearly or fully disintegrated.
Fibrous Peat - organic particles more.or-less intact.
Bottom of Testhole - includes ~ast sample interval.
Frost Line - seasonal frost depth as described by drilling action and/or
~amples at the time of drilling.
Frozen Ground - other than frost line, described by samples, usually
includes description of ice content, often will include modified Unified
Classification for frozen soils - this is a special case related to
permafrost studies.
Free Water Level -- The free water level noted during drilling. This is
not necessarily the static water table at the time of drilling or at other
soils requires observation wells or piezometer installations, used only i~
Blow/6'~ - The number of blows of· 140 weight free falling 30" to
advance a 2" split spoon 6": the number of blows for a 12" advance is,
by definition, the standard penetration.
,vi% ~ natural moisture content of the soil ~ampl~. usually not
~'~-formed on clean sands or gravels below the water table.
Type of SampIe -
a~. refers to 2" split spoon driven into the soil by 140 pound
weight, a disturbed sample,
.~, thin wall tube· "Shelby" used to obtain undisturbed samples
'~f fine grained soil,
C;, "grab" disturbed sample from auger flights or wall of trench,
~ cut sample, undisturbed sample horn wall of trench.
Dry Strength - a useful indicator of a soil'/ clayey fraction, N=None,
L~Low, M=Mcdium, H=High
Group - The ~mples are placed into apparently similar groups based
SOIL CLASSIFICATION
CHART
30% GRAVEL
CLAY
CLAYEY CLAYEY
CLAYEY
\ oR\
CLAYEY
DR SILTY SILTY
SILTY X X SILTY
~RAVEL
SAND
GRAVELLY SAND SANDY GRAVEL
SAND GRAVELLY SAND ~,NDY GRAVEL GRAVEL
0 10 20 30 .40 50 60 70 80 90 100
GRAVEL (+#4 SCREEN) % BY WEIGHT
NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LESS THAN 3% FINER THAN 0.02 mm.
GROUPS OF FROST-SUSCEPTIBLE SOILS:
F1 GRAVELLY SOILS CONTAINING BETWEEN 3 AND 20% FINER THAN 0,02 mm.
F2 SANDY SOILS CONTAINING BETWEEN 3 AND 15% FINER THAN 0.02 mm,
F3 a. GRAVELLY SOILS CONTAINING MORE THAN 20% FINER THAN 0.02 mm. AND SANDY SOILS
(EXCEPT FINE SILTY. SANDS) CONTAINING MORE THAN 15% FINER THAN 0.02 mm.
b. CLAYS WITH PLASI:ICITY INDEXES OF MORE THAN ]2. EXCEPT VARVED CLAYS.
a. ALL SILTS INCLUDING SANDY SILTS.
b, FINE SILTY SANDS CONTAINING MORE THAN 15% FINER THAN O.02 mm,
c. LEAN CLAYS WITH PLASTICITY INDEXES OF LESS TI-tAN ]2.
d. VARVED CLAYS.
Mr. Jesse L. Prince,
Mr. Tony Schraef
P.O. Box 467
Girdwood, AK 99587
4040 '°B" ST R E ET
ANCHORAGE, ALASKA 99503
July 5, 19'~7)
278-1551
W,O. #D10766
Jr. and
Subject: Evaluation of Subsurface Investigation Results
for Proposed Prince'Acres Subdivision
Gentlemen:
Having recently completed two subsurface exploration pro-
grams for the above project, we are submitting specific
recommendations for construction of on-site sewage treatment
systems based on the results of those explorations. The
data upon which these recommendations are based is organized
as follows:
Report of Subsurface Investigation Appendix A
Report of Preliminary Subsurface [
Investigation
Appendix
B
Hole Lo~ion~" Dwg.
Preliminary Plat with Test
121-28
A site can be characterized as two areas. Area A includes
all of Block 2 and Lots 6-24 of Block 3. We are satisfied
that each lot of this area is practical for the use of an
on-site sewage treatment system. Furthermore, we feel there
is sufficient su~surface~_~plnration data to recommend
-~ign values for individual wastewater treatment systems.
Area B consists of all of Block 1 and Lots 1-5 of Block 3.
In Area B, we believe, with minor ~, that each lot
is suitable for an on-site sewage treatment system; however,
we recon~end further test holes and percolation tests before
specific design values Gan be recomalended.
~pecJfic Recommendations
Area A:
Wastewater disposal systems in Area A may be
designed with a maximum rating, for any lot of 10
minutcs per inch. Additionally, we can give
specific ratings 'of ].ess than 10 minutes per inch
for the following lots:
and
Mr. Jessee L. Pr~ ~, Jr.
Mr. Tony Schraef
July 5, 1978 __.
Page 2
Block 2
Lot 2
Lot 3
'~ 4
Lot 5
Design Value
8 min./inch~
5 min./inch
LOt 6 5 min./inch
Lot 7 5 min./inch
LOt-15~ 5 min./inch
Lot 16 5 min./inch
Lot 17 5 min./inch
Lot 18
Lot 19
Lot 20
Lot 21
Lot 22
Lot 23
Lot 24
Block 3
Lot 6
Lot 7
Lot 8
Lot 9
LOt 10
Lot 11
Lot 18
Lot 19
Lot 20
8 min./inch
8 min./inch
8 min./inch
6 min.;inch
8 min./inch
8 min./inch
8 min./inch
Design Value
8 min./inch
8 min./inch
8 min./inch
8 mzn./inch
5 mzn./inch
5 min./inch
7 mznl/inch
5 min./inch
8 min./inch
Locate system on high
ground; avoid the area
near Test Hole #10.
Locate system on side of
lot toward cul-de-sac.
Avoid area near Test
Bole 910.
In each case, locate the system relatively high on the lot
and avoid sink holes or drainages.
Generally, the above design percolation values have been
arrived at through interpretation and extrapolation of test
hole and percolation data. We feel confident the values are
generally conservative. It may be possible to lower the
design percolation value on some lots by actually placing a
test hole and running a percolation test on that specific
lot. If the testing can shorten the required absorption
trench length about 10' to 15', it will save the cost of
the test in construction materials.
Mr. Jesse L. Prir
Mr. Tony Schraef
July 5, 1978
Page 3
Area B:
Jr. and ~
With the exception of Lot 5, per a~st has been
identified on each lot in Bloc~ The suspected
limits of the permafrost area, as interpreted in
the field by our senior geologist, is shown on the
attached drawing. In the design of the lots,
sufficient area outside of the confirmed perma-
frost has been allowed in order to provide a
building site and room for a wastewater disposal
system. Since the permafrost hazard in this area
is relatively great, it would be prudent for a
deep frost probe to be conducted on each lot in
Block I prior to construction of houses.
We feel satisfied that all lots within Area B will
meet the Municipality of Anchorage requirements
for ~n-site sewage treatment systems with t~ //
possible exceptions of Lots 1 and 2, Block 1~..
Depending on the results Of further tests, it may.
be necessary to combine these lots into one.
Except as noted below, it will be necessary to
place one or more test holes and perform percolation
tests on each lot within Area B before specific /
design.values can be recommended. A possibl_~e~
exception may be on Lots 3, 4 and 5, Block(33where
two test holes and percolation.tests may be--adequate
if the data indicates a rating better than 10
min./inch. Another exception exists on Lot 7,
~lock~.where a Sandy Gravel layer was encountered
in the deep test-~ and a design percolation
rate of 5 min./inch may be used.
Sufficient investigation should be performed on
each lot within Area B to prove it capable of
meeting Municipal requirements before sale of the
lot.
The actual soil conditions are expected to vary somewhat
within the lots as the lots are quite large. The above
recommendations are based on the results of test holes which
examine only a 6" or 8" diameter hole. Excavations for
seepage trenches for typical houses will be on the order of
50 feet long. These will provide a much clearer picture of
the subsurface conditions than the test holes. Each trench
should be carefully examined during excavation. If the soil
conditions turn out to be more favorable than predicted, it
may be possible to economize some systems by reducing length
of the trench. Conversely, if the soil appears tighter than
anticipated, then it ~ay be necessary to enlarge the system
or to use an alternate location on the lot. The chief value
Mr. Jesse L. Pri
Mr. Tony Schraef ~-~
July 5, 1978
Page 4
Jr. and
of the drilled holes is in establishing the feasibility'of
on-site systems, while examination of the trench is expected
to provide better specific information for each lot.
We trust the above is sufficient for the printed state of
progress on the project. If we can be of further assistance,
please do not hesitate to contact us.
Very truly yours,
ALASKA TESTLAB
RMH:bj:rb
Enclosures
APPROVED /
Melvin R. Nichols, PE
~.aboratory Manager
~une 28, 1978
N*O. tD10766
Mr. Jesse L. Prince, Jr.
Mr. Tony Schraff
P.O. Box 467
Girdwood, AK 99587
Subject:
Subsurface Investigation for Proposed
Prince Acres Subdivision Located within the
SW Quarter, Section 2, T.15N., R.1W.,
Seward Meridian, Alaska
Gentlemen:
Transmitted herein are the results of the subsurface investiga-
tion for the above project. The scope of this investigation
is to be determine the suitability of the site for on-site
sewag~ treatment systems, and exploration to determine the
approximate extent of permafrost. AccomPanying 'this report
are the following:
Test Hole Logs
Standard Explanatory Information
Grain Size Distribution Curves
Report on Preliminary Investigation
Idealized Soil Profiles
Preliminary Plat Showing Test Hole
Locations
Table A
Sheets 1-3
Sheets 4-6
Appendix B
Sheets 7-9
Dwg. i21-28
The site was first investigated by Alaska Testlab in March 1978.
A series of 12 additional test holes were placed in May 1978
and the results are transmitted herein. Test holes were
logged and the soils visually classified by Mr. O.M. Hatch,
geologist with Alaska Testlab. Test hole locations are
shown on the attached preliminary plat.
Samples of soil were sealed in plastic bags and returned to
the laboratory for determination for moisture and dry strength.
In the laboratory, samples of similar color, texture, and
particle size distribution .were grouped together and given
an arbitrary group desiqnation. Grain size analysis was
performed on composite Samples of important groups rather
than on individual samples. Five ~eneral soil types were
encountered and are listed'below b~ their group designation.
T~ese are correlated with the groups from the preliminary
investigation.
Mr. Jesse L. Pri
Mr. Tony Schraff
June 28, 1978
Page 2
Group A
Group C
is a brown Silty Sandy. Gravel. This group is'
moderately frost susceptible, rated F-1. Unified
classification is GM. This group is predominant
on the upper portion of the site and should be
fairly permeable.
is a grey Sandy Silt. This group is highly frost
susceptible, rated F-4. Unified classification is
ML. Group C has low plasticity.
~roup D
is a grey slightly Silty Sand.
frost susceptible, rated F-2.
tion is SM.
Group D is moderately
Unified classifi~a-
Group E
is a b~own to grey Silt. This group is highly
frost susceptible, rated F-4. Unified classifica-
tion is ML. This group is non-plastic.
Group H is a grey Sandy Silty Clay. This group is highly
frost suscep-~i-61e, r~ted F-4. Unified classifica-
tion is CL. This group has medium plasticity.
When ~rilling was completed, a' 3/4" slotted PVC pipe was
inserted in each hole to facilitate the measurement of the
water level. Percolation tests were then performed on
~elected holes. Slotted PVC pipe was left in the remainder
of the holes to facilitate future percolation tests if
necessary. For the test, the holes were filled with water
and left overnight to saturate. On returning the next day,
the holes were refilled with water and the drop in the water
level carefully monitored over the next 60 minutes.' The
following table summarizes the observed minimum percolation
rates.
Minimum Required s.f.
Test Hole # Percolation Rate per Bedroom
1 6.2 min/inch 140
7 2.0 min/inch 85
11 .1.8 min/inch 85
16 8.0 min/inch 150
In test hole #8 water was at '~.3' before the initial fill
and no percolation test was performed. In test hole #25,
water dropped only to 3.6' overnight after the initial fill
and percolation test was not performed.
Permafrost was encountered in the low area in the northwest
corner of the site. Deep frozen soils were encountered in
test holes #13, #17, ~19, ~20, ~22, and ~24. Test holes
Mr. Jesse L. Pti ,~
Mr. Tony Schraff
June 28, 1978
Page .3
~18 and ~21 were conducted as deep frost probes specifically
designed to detect deep frozen soils. These were placed
near the perimeter of the apparent permafrost area. No deep
frozen soils were identified in either of the deep frost
probes.
The idealized soil profiles shown accompanying this report
are based on the logs only at the actual test hole location.
Soil profiles between those locations are postulated. The
topographical relief of the site has been exaggerated with
respect to the horizontal, and the depth of the test holes
has been exaggerated with respect to the topography°
It is trusted that the.foregoing meets your present require-
mentSo If you have any questions or if we can be of further
assistance, please do not hesitate to contact us.
Very sincerely,
ALASKA TESTLAB
R. Mark Hansen
RMH:rb
Enclosures
PPROVED .
Melvin R. Nichols, PE
Laboratory Manager
Test llole #14
Table A
WO #D10766
Logged By: 0.~. Hatch
Date: 5-17-78
~epth in Feet
From To
0.0' - 2.0'
2.0' - 16.0'
Soil Description
Brown Peat (Pt), damp, soft.
F-1, brown Silty. Sandy Gravel (GM) occasional
cobbles, damp, medium d~nsity, rounded and sub-
rounded particles, large gravel 10'-14', large
rock 14',16'
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
None Observed
None Observed While Drilling
Sample. Depth
1 5.0'
2 10.0'
3 16.0'
Remarks:'
Blows/6"
Type of Dry
M% Sample Strength Group
G
G
G
unified
1. Type of Sample, G=Grab, Sp = Standard Penetration,
U = Undisturbed.
2. Dry Strength, N=None, L=Low, M=Medium, H=High.
3. Group refers to similar material, this study only.
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified Classification, see Sheet 3.
Test Hole ~15
Depth in Feet
From To
0o0' - 1.0'
1.0' - 6.0'
6'0' - 10.0'
10.0' ~ 16.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample D~pth
I 5.0'
2 10.0'
3 16.0'
Table A
WO ~D10766
Logged By: O.M. HatCh
Date: 5-17-78
Soil Description
Brown Peat (Pt), damp, soft.
F-l, brown ~ ~ Gravel, (GM), ~.11 sand
sizes present, medium t~ .h---~ density, sub-
rounded particles to 6".
NFS to F-2, brown Gravelly Sand (SP-SM), all
sand sizes present, slightly Silty, damp,
mediu~ density, rounded and subrounded particles
to 2".
F-l, brown to grey Silt~ Sandy. Gravel (GM), all
sand sizes present, damb, medium to high density,
subrounded particles to 3"
16.0'
None Observed
None Observed While Drilling
Type of Dry
Blows/6" M% Sample Strength Group Unified
G
G
G
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strenqth, N=None, L=Low, M=Medium, H=High.
· Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Ho~e
Depth in Feet
From To
0.0' - 2.0'
2.0' ° 7.5'
7.5' - 16.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
S~mpl~. Depth
1 5.0'
2 10.0'
3 16.0'
Table A
WO #D10766
Logged By.' O.M.
Date: 5-17-78
Soil Description
Brown Peat (Pt), damp, soft.
F-l, brown Silty Sandy Gravel (GM), damp,
medium density.
'NF~ to F-2, brown Gravelly Sand (SP-SM),
slightly Silty, ali sand sizes present, damp,
medium density, rounded and subrounded
particles to 2" becomes siltier with depth.
16.0'
None Observed
None ObServed while Drilling
Type of' Dry
Blows/6" M% Sample S_trength Group
G
G
G
Hatch
Unified
Remarks: 1.
2®
3.
4.
5o
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=5~edium, H=High-
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test llole ~17
Depth in Feet
From To
0.0' ~ 3.0'
3.0' - 8.0'
8.0' - 10.0'
Table A
WO ~D10766
Logged By: O.M. Hatch
Date: 5-18-78
Soil Description
Brown Peat (Pt), damp, soft.
F-4, brown Sandy Silt (ML), frozen, with ice
lensing, contains much ice°
F-4, grey Sand~ Silt (~).
Bottom of Test Hole:
Frost Line:
Free Water Level:
10.0'
0.5'-8.0'
None Observed While Drilling
Sample ' Depth
I 6.0'
2 10.0'
Type of Dry
Blows/6" M% Sample. Strength Group
43.5 G M E
28.1 G M-H H
Unified
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, ~!=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #18
Depth in Feet
From To
0.0~ - 2.0'
2o0' - 7.0'
7.0' - 12.0'
12.0' - 15.0'
15.0' - 17o5'
17.5' - 20.0'
20,0' - 22.0'
22.0' - 2710'
27.0' - 29.5'
29.5' - 31.5'
Bottom of Test Hole:
Frost Line:
Free Water Level:
(Continued)
Table A
WO ~D10766
Logged By: O.M. Hatch
Date: 5-18-78
Soil Description
Brown Peat, (Pt), damp.
F-4, brown and grey Sandy Silt (ML), damp,
soft to stiff, PL!.
F-4, grey Clayey Silt (CL), damp to wet,
soft, PI+.
F-4, grey Silt (ML), saturated, NP, dilatent.
F-4, grey Clayey Silt (CL), damp, soft, Pi+.
F-4, grey Silt (ML), slightly Sandy, damp,
stiff, NP.
F~2, grey Silty Gravelly Sand, (SM), with
Gravelly Sandy Silt layering, damp.
F-4, grey Silt (ML) with trace sand and gravel,
damp, stiff, PL+.
F-3 to F-4, grey Sandy Silt (SM) to Silt~
Sand (SM), saturated, medium density, NP.
F-2, grey Silty Sand (SM), fine grained, saturated,
~edlum density.
31.5'
0.5'-2.0'
12.0' While drilling
Test }Die ~18 (Continu~) W.O. #D10766
Sample Depth Blows/6" ~__~
1 2.5'- 4.0' 9/5/6 17.7 SP
2 5.0'- 6.5' 4/5/6 18.6 SP'
3 7.5'- 9.0' 2/3/5 30.7 SP
4 10.0'-11.5, 2/2/3 22.9 SP
5 12.5'-14.0' 4/6/7 24.7 SP
6 15.0'-16.5' 2/4/5 25.2 SP
7 17.5'-19.0' 5/8/18 25.3 SP
8 20.0'-21.5' 9/28/28 13.0 SP
9 22.5'-24.0' 6/8/11 20.9 SP
1'~ 25.0'-26.5' 8/11/11 20.3 SP
11 27.5'-29.0' 11/15/17 23.9 SP
12 30.0'-31.5' 7/11/12 24.6 SP
Type of Dry T=,~.
Sample Strength Grou~ Unified °F
M-H H MI,-CL 34
~ H ~ 36
H H ML-CL 37
M-H H ML-CL~ 37
L-M C ML 37
M-H C ML 37
M H ML-CL 38
M - - 39
M-H H ML 39
H H ML 39
N-L E ML 39
L D ~4 38
3.
4.
5.
6.
Type of Sa~le, ~ Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, L~=~edi~, H=High.
Group refers to similar material, ~-his study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test. }Iole t19
Depth in Feet
From To
0.0' - 2.5'
· 2.5' - 8.0'
8.0' - 10.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
1 5.0'
2 10.0'
Remarks: 1.
e
3.
4.
5.
6.
Table A
WO ~D10766
Logged By: O.M.
Date: 5-]8-78
}latch
Soil Description
Brown Peat (Pt~.
F-4, brown Sandy Silt (ML), frozen, damp to
wet with ice lensing at 4', stiff, Pi+.
F-4, brown Gravelly
damp; Stiff.
Sandy Silt, (~), frozen
10.0'
0.5'-10.0'+
None Observed k~ile Drilling
Temp. °F M__%
31 36.7 G H
31 21.3 G M
Type of Dry
Sample Strength Group U_nified
E ML
Type of'Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #21
Depth in Feet
From To
0.0' - 1.0'
1.0' - 4.5'
4.5' - ..7.0'
7.0' - 9.0'
9°0' - 12.0'
12.0' ' 14.0'
14.0' - 27.0'
27.0' - 31.5'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Table A
WO ~D10766
Logged BY: O.M.
Date: 5-18-78
Hatch
Soil Description
Brown Pea% (Pt).
F-4, brown Gravelly Sandy. Silt (ML), damp,
stiff, rounded and subrounded particles to 2".
NFS, brown Sandy Gravel (GP), damp, medium
density, trace Silt, rounded and subrounded
Particles to 3".
F-4, brown Gravelly Sandy Silt (ML), damp,
stiff, NP, rounded and subrounded particles
tO 2".
F-2, brown Silty Sand (SM), with Sandy Silt
lensing, fine gr~ined, damp, medium density.
F-4, brown'Sandy Silt (ML) with Silty Sand
lensing, damp, stiff, NP.
F-2, brown to grey Silty Sand (SM) fine grained,
with silt lensing, wet to saturated, medium
density.
F-4, grey Silt (ML) with Silty Sand lensing,
saturated, stiff, NP.
31.5'
0.5'- 1.0'
16.0' while drilling
(Continued)
TeSt l{ole #2{ (Continued) W.O. #D10766
Type of Dry
Sample Depth Blows/6" M% Sample Strength Group
1 2.5'- 4.0' 6/13/14 18.0 SP M-H H
2 5.0'- 6.5' 14/24/29 3.7 SP M A
3 7.5'- 9.0' 9/18/14 12.6 SP L-M A
4 10.0'-11.5' 9/15/16 11.5. SP L -
5 14.0'-15.5' 17/20/23 20.1 SP L-M E
6 15.0'-16.5' 15/19/25 18.2 SP L-M E
7 17.5'-19.0' 17/24/34 22.2 SP M E
8 20.0'-21.5' 15/23/25 19.8 SP M E
9 22.5'-24.0' 14/23/40 19.9 SP M E
l0 25.0'-26.5' 24/30/46 19.6 SP M-H E
11 27.9 !-29.5' 20/37/45 21.1 S~' L-M E
12 30.0'-31.5' 20/43/70 18.0 SP M E
Unified'
ML-CL 37
~l 42
~4 40
~ 41
ML 41
ML 41
ML 40
ML 40
ML 40
ML 40
ML 41
ML 42
®
3.
4.
5.
6.
Type of Ss~ple, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, ~None, L=Low, ~Medi~, H=-~gh.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test }lole #22
Depth in Feet
From To
0.0' o 5.0'
5.0' - 10.0'
Table A
WO #D10766
Logged By? O.M. Hatch
Date: 5-19-78
Soil Description
Brown Peat (Pt), damp.
F-4, blue-grey Clayey Silt (CL), damp, stiff,
Pi+.
Bottom of Test Hole:.
Frost Line:
Free Water Level:
Sample Depth
I 5.0'
10.0'
0.5'-3.0'
None Observed While Drilling
Temp 'Type of
"F ..3' · Sample
36 G
Remarks:
1. Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
2. Dry Strength, N=None, L=Low, M=Medium, H=High.
3. Group refers to similar material, this study only.
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified Classification, see Sheet 3.
Test ]Iole ~23
Table A
WO #D10766
Logged By: O.M. Hatch
Date: 5-19-78
~epth in Feet
From To
0.0' - 2.5'
2.5' - 12.5'
12.5' - 15.0'
Soil Description
Brown Pea%'(Pt), damp,
F-4, brown Clayey Silt
stiff, P1-.
soft.
(CL), damp to saturated,
· F-4, olive Gravelly Sandy Si~ (ML), wet,
stiff, rounded particles to 3".
Bottom of Test Hole:
Frost Line:
Free Water Level:
~ample Depth
15.0'
~0.5'-1-0'
/
Temp. °F' Sample
-1 5.0' 35 G
2 10.0' 37 G
3 15.0' 39 G
Remarks: 1.
e
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole ~24
Table A
WO #D10766
Logged By: O.M.
Date: 5-~ 9-7,8
Hatch
Depth in Feet
From To
0o0' - 3.0'
3.0' - 10.0'
Soil Descript'ion
Brown Peat (Pt).
F-4, brown and grey Gravelly Sand~ silt
damp, stiff~ frozen.
(ML) ,
Bottom of Test Hole:
Frost Line:
Free Water Level.:
Sample Depth Temp.
1 5.0~ 31
2 10.0' 31
'10.0'
0.5'-10.0'+
None Observed while drilling
Type of
Sample
G
G
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = undisturbed. ' ·
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole
Table A
WO #D10766
Logged By: O.M.
Date: 5-19-78
HatCh
~e~th in Fee~
From To
0.0' - 0.5'
0.5' - 7.0'
7.0' - 15.0'
Soil Description
Brown ~ea% (Pt), damp.
F-4, brown Gravell~ Sand~ Silt (ML), damp,
stiff, NP, ~ounded and subrou~ded particles
tO 2".
F-4, brown Sand~ silt (ML) with trace gravel,
damp,, stiff, NP to P1-.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample D_epth
I 5.0'
2 10.0'
3 15.0'
15.0'
None observed
None Oboerved while Drilling
T~emp.
42
42
42
Type of
Sample
G
G
G
Remarks:
1. Type of Sample, G=Grab, SP = Standard Penetration,
U = undisturbed. ~ ·
2. Dry Strength, N=None, L=Low, M=.~edlum, H=High-
3. Group refers to similar material, this study only-.
4. General information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified Classification, see Sheet 3.
Test Hole Lo9 ' Description Guide
~xe lois ut'ten include thc followin$ items:
D~pth Interv, I - usually shown to 0.1 foot, within cha~ zone no
~ ' ~mfi~nt c~n~e in ~oXl type w~s ob~rved ~hroughdri[lac~ion, d~ecc
~n~. (Thc mois~ utc con~cn~ is ~ur~hcr ~e~ned by re~ercnce ~o PI,
L~, NP, M% or d~acency.)
~ ~by ~ubc 3". ~ugcr Ri~h~s (mJnuce-man~ ~" flights
Rocl~ flour -- finely sround soil that is not plastic but otherwise appears
similar to a cl'yey silt.
dis~ete particl~ such as wood, co~[, etc. as a modifier to an inorganic
~ all organic. - as Pe~. This m~y i~clude tundra, musk~ and bog
materbL
Moc~ - a modi6er used to describe very So~, semi~nic ~eposJ~s
Us~ily oceurJnB below · pe~c d~o~.
Amor~hus pe~t -- organic particles nearJy or ~ully disint~r~ted.
~ttom o(Testhole - includes last ~mple inter~nL
Fros~ Linc - sen~nnl frost ~epth as describcd by drillin~ ~ction ~tid/or
~mplcs at the time o( drOhn~.
includes description o{ ice content, o~tcn will include modified
Cl~ssific~don for frozen ~ils - this is n spcc~ cn~ rrlntcd
Free ~er Level - Thc free w~tcr le~ noted durin~ drilling. Th~s
Blow/6~ - The number o~ blows of a 140 we~ht [rec falling 30" to
by definition, thc stlndard pcnctr2tion,
Type or Sample -
~. rclcts to 2" split spoon driven into the soil by 140 pound
of ~ne grained soil.
SOIL CLASSIFICATION CHART
T
30% GRAVEL
CLAY
CLAYEY
CLAYEY
CLAYEY
CLAYEY
DR
SILTY SILTY
SILTY X X SILTY
SAND
SAND
GRAVEL
GRAVELLY SAND SANDY GRAVEL
/
GRAVELLY SAND GRAVEL GRAVEL
0 I 0 20 30 40 50 60 70 80 90 100
GRAVEL (+~4 SCREEN) % BY WEIGHT
NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LESS THAN 3% FINER THAN 0.02 mm.
GROUPS OF FROST-SUSCEPTIBLE SOILS:
GRAVELLY SOILS CONTAINING BETWEEN 3 AND 20*/* FINER THAN 0.02 mm.
F2 SANDY SOILS CONTAINING BETWEEN 3 AND 15% FINER THAN 0.02 mm-
F3 a. GRAVELLY SOILS CONTAINING MORE TI-lAN 20% FINER TI tAN 0.02 mr'ri. AND SANDY SOILS
(EXCEPT FINE SILTY, SANDS) CONTAINING MORE TIIAN 15% FINER TttAN 0,02 mm.
.b. CLAYS WlTtl PLASTICITY INDEX[5 OF MOR[. THAN 12. EXCEPT VARVED CLAYS.
Fa,, a. ALL SILTS INCLUDIN{.~ SANDY SILTS.
b. FINE SILTY SANI)S CON1AININ(] MOHE TITAN 15% FINER THAN 0.02 mm.
I:. LEAN CLAYS WI]II PLASTICITY INL)EXES O1: LESS TI-lAN ] 2.
d, VARV[D CLAYS,
~?, ii HII iJlli'i~
g ~
.I
APPENDIX A
?
?
9/-/.
I:
4040 "B" STREET
ANCHORAGE, ALASKA 99503
(907) 278-1551
May 2, 1978
W.O. #D10766
Mr. Jesse L. Prince,
Mr. Tony Schraff
P.O. Box 467
Girdwood, AK 99587
Jr.
Subject:
Preliminary Subsurface Investigation
for Proposed Prince Acres Subdivision
Located within the SW 1/4, Sec. 2,
T.15N., R.1W., Seward Meridian, Alaska
Gentlemen:
As instructed by Mr. A1 Lahunum of DOWL Engineers, we have
performed the preliminary subsurface investigation on the
subject property. Included here are:
Test Hole Logs
Standard Explanatory Information
Grain Size Distribution Curves
Table A
Sheets '1-3
Sheets 4-5
Test hole locations are shown'[ on the attached preliminar~
plat. Exploration consisted of 13 test holes. A Nodwell
mounted Mobile dri.ll B-50 rig was used to advance the holes.
The rig was equipped with a solid flight auger. The drilling
equipment is owned and operated by Denali Drilling, Inc.
Test holes were logged and located in the field by Mr. ~.L..
Barber or Mr. O.M. Hatch, geologists with Alaska Testlab.
As field samples were recovered, they were sealed in plastic
bags to protect the samples and retain their natural moisture
content. In the laboratory, the samples were visually
classified and the moisture content and dry strength of
these samples determined. Samples of similar color, tex-
ture, and particle size distribution were grouped together
and given an arbitrary.group designation. Grain size analysis
was then performed on composite samples of important groups
rather than on individual samples. Five general soil types
were encounted and are listed below by their group designation
for reference to test holes.
Group A
is a brown ~ Sandy Gravel. This group is
moderately £rost. susc~p~l~bl~ rated F-1. Unified
classification is GM.
Mr. Jesse L. Prin ~ Jr.
Mr. Tony Schraff
May 2, 1978
Page 2
Group B
Group C
is a brown Sandy Gravel with traces of Silt. This
group contains many cobbles and is typically quite
dense and Ks marginally frost susceptible, being
rated F-1. Unified classification is GP/GM. This
is the most ~mportant group on the site.
is a brown Sand~ Silt. This group is highly frost
susceptible rated F-4. Unified classification is
ML.
Group D
is a Silty Sand with trace of Gravel. This group
is highly frost susceptible, rated F-2/F-3.
Unified classification is SM.
Group E is a grey Silt. This group is highly frost
susceptible, rated F-4. Unified classification is
ML. This group was encountered only beneath the
peat in the deep peat area. Soil contains some
organic and is plastic.
The grain size distribution curves for the groups described
may not be entirely representative of the soil in the field.
Parti6ularly where large gravel sizes and cobbles exist.
This is because the larger particles are usually not re-
covered from the auqer flight. Thus, the soil in the field
typically has a higher gravel content than ~ndicated on the
grain size distribution curves.
The site generally looks favorable for subdivision develop-
ment. Percolation tests have not been performed, however, a
3/4" slotted PVC pipe has been left in each test hole to
facilitate future percolation tests. Based on the analysis
of the soils, we believe percolation rates will be satis-
factory over most of the site. However, we propose to
perform several percolation tests in the existing test holes
to verify this opinion.
Test hole ~10 indicated probable bedrock a~d shaliow ground
water. We do not believe this condition exists over a
particularly large area. Three additional test holes in the
general vicinity of test hole ~10 are proposed to more
closely determine the extent of the shallow bedrock condi-
tion.
Test hole ~12 shows sufficient depth of peat to make de-
velopment of that area uneconomic. Test hole ~13 located on
a small mound near ~12 shows significant depth of frozen
peat. Several additional test holes are recommended to
define the limits of the deep peat condition.
Mr. Jesse L.
Mr. Tony Schraff
May 2, 1978
Page 3
No free ground water was observed in most of the test holes.
When free ground water was encountered, the depths is shown
on the test hole logs. The depths given should be given
with caution, however, since these were only depths during
drilling. Observation wells have been left at the test hole
locations but have not been checked since the time of
drilling. Also, the free water level may vary seasonally
with precipitation.
We %rust the foregoing is sufficient to your immediate
needs. Should you have any questions or if we can be of
further assistance, please do not hesitate to contact us.
Very sincerely,
ALASKA TESTLAB
R.. Mark Hansen
RMH:rb
EncloSures
~4elvin R. Nichols, P.E.
Laboratory Manager
Test Hole
Depth in Feet
From To
0.0' 0.5'
0.5' - 2.5'
2.5' 7.0'
Table A
WO ~D10766
Logged By: O.M.
Date: 3-7-78
Soil Description
Brown Peat, Pt, damp, soft.
Cobbles, damp, medium density,
subrounded particles to 12".
F-l, brown Silty Sandy Gravel,
cobbles, damp, medium to
sharp and
GM, many
high density.
Hatch
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
1 5.0'
7.0' Remarks:
Trace at surface
6.0'
Driling
Type of Dry
Blows/6" M% Sample Strength
-- 11.4 G N
refusal at 7.0'
Group Unified
A GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard
U = Undisturbed.
Dry Strength, N=None,.L=Low, M=Medium,
Group refers to similar material,
General Information, see Sheet 1.
Frost and Textural Classification,
Unified Classification, see Sheet
Penetration,
H=High.
this study only.
see. Sheet 2.
3.
Test Hole
Table
A
WO #D10766
Logged By: O.M.
Date: 3-7-78
lla tch
Depth in Feet
From To
0.0' - 1.0'
1.0' - 5.0'
5.0' 16.0'
Soil Description
Brown Peat, Pt, damp, soft.
F-l, brown.Silt~ Sand~ Gravel, GM, damp, low
to medium density, sharp and subrounded
particles.
F-l, brown Silt~ Gravel, GP-GM, with trace
sand, occasional cobbles, damp, medium den-
sity, sharp and subrounded particles.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
1 5.0'
2 10.0'
3 16.0'
16.0'
Trace at surface
None Observed
Type of' Dry
Blows/6" M% Sample. Strength Group Unified
18 . 7 G L B GP-GM
6 . 8 G L-N B GP-GM
10 . 3 G L-N B GP-GM
Remarks:
1. Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
2. Dry Strength, N=None, L=Low, M=Medium, H=High.
3. Group refers to similar material, this study only.
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified classification, see Sheet 3.
Test llole ~3
Tab le A
WO #D10766
Logged By: O.M.
Date: 3-7-78
Hatch
Depth in Feet
From To
0.0' - 2.0'
2.0' - 7.0'
7.0' - 10.0'
Soil Description
Brown Peat, Pt, damp, soft.
F-4, brown Silt, OL, damp, soft to stiff,
PL+, contains traces gravel and organics.
F-l, brown Silty Gravel, GM, many cobbles,
few boulders, damp, dense, subrounded
particles.
Bottom of Test Hole:
Frost Line:
Free Water Level:
10.0'
Trace at surface
None Observed
Sample Depth
1 5.0'
2 10.0'
Type of Dry
Blows/6" M% Sample Strength Group Unified
-- 70.1 G N - GL
-- 12.7 G N A GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test llole #4
Table A
WO ~D10766
-Logqed By: O.M.
Date: 3-8-78
Hatch
Depth in Feet
From To
0.0' - 0.5'
0.5' 11.0'
11.0' - 16.0'
Soil Description
Brown Pe~t, Pt, damp, soft.
F-l, brown Silty Sand~ Gravel, GM, damp,
medium to high density, many cobbles, few
boulders, sharp and subrounded particles.
F-4, brown Gravelly Sand~ Silt, damp, stiff.
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
0.5'
None OSserved
Sample Depth
1 5.0'
2 10.0'
3 15.0'
Type of Dry
Blows/6" M% Sample' Strength Group
-- 14.7 G N A.
-- 9.1 G N B
-- 6.7 G L A
Unified
GM
GP-GM
GM
Remarks:
2.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
TeSt }Iole #5
Depth in Feet
From To
0.0' - 0.5'
C.5' - 16.0'
Table A
WO #D10766
Logged By: O.M. Hatch
Date: 3-8-78
Soil Description
Brown Peat, Pt; damp, soft.
F-l, brown Silt~ Sand~ Gravel, GP-GM,
occasional-cobbles, damp, medium density,
sharp and subrounded particles.
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
0.5'
None Observed
Sample Depth Blows/6" M%
5.0'
10.0'
15.0'
Type of Dry
Sample Strength Group unified
-- 11.2 G
-- 13.1 G
-- 8.1 G
N A' GM
L-N B' GP-GM
N B GP-GM
Remarks:
1. Type of Sample,
U = Undisturbed.
2. Dry Strength, N=None, L=Low, M=Medium,
3. Group refers to similar material, this
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see
6. Unified Classification, see Sheet 3.
G=Grab, SP = Standard Penetration,
H=High.
study only.
Sheet 2.
Tust Hole ~6
Depth in Feet
From To
0.0' - 1.0'
1.0' - 2.5'
2.5' 16.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
1 5.0'
2 10.0'
3 15.0'
T~ble A
WO #D10766
Logged By: O.M.
Date: 3-8-78
Soil Description
Brown Peat, Pt, damp, soft.
F-4, brown Sand~ Silt, ML, damp, stiff, NP.
F-l, brown Silty Sand~ Gravel, GP-GM, damp,
medium to high density, occasional cobbles,
subrounded particles.
16.0'
0.5'
None Observed
Blows/6"
Type of Dry.
M% Sample Strength Group.
8.8 G N B
5.6 G N B
4.3 G N B
}latch
unified
GP-GM
GP-GM
GP-GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High-
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test llole ~7
Tabl~ A
WO ~D10766
Logged By: O.M.
Date: 3-8-78
Hatch
Depth in Feet
From To
0.0' - 1.0'
1.0' - 2.0'
2.0' - 7.0'
7.0' - 10.0'
10.0' 16.0'
Soil Description
Brown. Peat, Pt, damp, soft.
F-4, brown Sandy Silt, ML, damp, stiff, NP.
F-l, brow~ Silty Sandy Gravel, GP-GM, damp,
medium to high density, occasional cobbles,
subrounded particles.
F-l, brown very Silty Sandy Gravel, GM, damp,
medium density, subrounded particles to 3"
F-l, brown Silty Sandy Gravel, GP-GM, damp,
medium to high density, occasional cobbles,
subrounded particles.
Botto~ of Test Hole:
Frost Line:
Free Water Level:
16.0'
0.5'
None Observed
Sample Depth
1 5.0'
2 10.0'
3 15.0'
Type of Dry
Blows/6" M% Sample Strength Grou~
-- 6.6 G N B
-- 8.1 G N B
-- 6.8 G N B
Unified
GP-GM
GP-GM
GP-GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2'.
unified Classification, see Sheet 3.
Test llole #8
Table ~A
we ~D10766
Loggcd By: O~M. }latch
.Date: 3-8-78.
Depth in Feet
From To
0.0' - 0.5'
0o5' 1.5'
1.5' - 16.0'
Brown Peat,
F-4, brown
F-l, brown
occasional cobbles,
particles.
Soil Description
Pt, damp, soft.
Sand~ Silt, ~, damp, stiff, NE.
Silty Sand~ Gravel, GP-GM, damp,
few boulders, subrounded
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
0.5'
None Observed
Sample Depth
1 5.0'
2 10.0'
3 15.0'
Remarks:
2.
3.
4.
5.
6.
Type of Dry
Blows/6" M% Sampl~ Strength
9.8 G N
5.5 G N
3.6 G N
Type of Sample, G=Grab, SP = Standard
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium,
Group refers to similar material, this
General Information, see Sheet 1.
Frost and Textural Classification, see
Unified Classification, see Sheet.:-~
Grou~ Unified
B GP-GM
B GP-GM
B GP-GM
Penetration,
H=High.
study only.
Sheet 2.
Test llole t9
Depth in Feet
From To
0.0' 0.8'
0.8' - 7.0'
7.0' 15.0'
Table A
we ~D10766
Logged By: T.L.
Date: 3-9-78
Soil Description
Brown ~eat, Pt, wet, soft.
NFS to F-l, brown Sand~ .G~avel, GP-GM,
trace silt, damp, dense, subrounded and
rounded particles.
F-2, brown Silty Gravelly Sand, SM, damp,
medium density, subrounded and rounded
particles.
Barber
with
Bottom of Test Hole:
Frost Line:
Free W~ter Level:
15.0'
1.0'
None Observed
Sample Depth
1 5.0'
2 10.0'
3 15.0'
Type of Dry
Blows/6" M% Sample Strength .Group
-- 5.2 G N B
-- 3.8 G N B
-- 5.0 G N -
Unified
GP-GM
GP-GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, }{=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Ilole ~10
Depth in Feet
From To
0.0' - 0.5'
0.5' - 7.5'
7.5I
Bottom of Test Hole:
Frost Line:
Free Water Level:
Table A
WO ~D10766
Logqed By: T.L.
Date: 3-9-78
Barber
Soil Description
Brown Peat, Pt.
F-l, brown Silt~ Sandy Gravel, GM, damp to
saturated, dense, sharp particles, occasional
cobbles.
Either bedrock or large boulder
7.5' Remarks:. Drilling refusal at 7.5'
None Observed
7o5I
Sample Depth Blows/6" M%
1 5.0' -- 15.0
Remarks: 1.
3.
4.
5.
6.
Type of Dry
Sample Strength Unified
G L
Group
A
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
GM
Test Hole #11
Depth in Feet
From To
0.0' 1.0'
1.0' 8.0'
8.0' 15.0'
Table A
WO #D10766
~Logged By: T.L. Barber
-Date: 3-9~78
Soil Description
Brown Peat, Pt, damp to wet.
F-4, brown Gravelly Sandy Silt, GM.
F-l, brown Silty Sandy Gravel, GP-GM,
damp, medium density, rounded and subrounded
particles.
Bottom of Test Hole:
Frost Line:
Free Water Level:
15.0'
None Observed
None Observed
Sample Depth
I 5.0'
2 10.0'
3 15.0'
Type of Dry
Blows/6" M% Sample Strength Group
11.1 G N A
5.9 G N -
8.1 G N B
Unified
GM
GM
GP-GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #12
Depth in Feet
From To
0.0' 17.0'
17.0' - 19.0'
Table A
WO #D10766
Logged By: T.Lo
Date: 3-9-78
Soil Description
Brown'~Peat, Pt, wet to saturated, soft.
F-4, grey Clayey Silt, CL, soft to stiff,
PL+.
Barber
Bottom of Test Hole:
Fr6st Line:
Free Water Level:
Sample Depth
1 19.0'
19.0'
None Observed
1.0'
Type of Dry
Blows/6" M% Sample ~'trength
-- 30.1 G H
Group
Unified
CL
Remarks:
1. Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
2.' Dry Strength, N=None, L=Low, M=Medium, H=High.
3. Group refers to similar material, this study only.
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified Classification, see Sheet 3.
Test Hole ~13
Depth in Feet
From To
0.0' 16.0'
16.0' - 20.0'
Table
WO ~D10766
Logged By': T.L.
Date: 3-9-78
Barber
Soil Description
Brown Peat, Pt, wet to saturated, frozen hard
0.0' to 11.0'.
F-4, grey Clayey Silt, CL, saturated, ~tiff,
PL+.
Bottom of Test Hole:
Frost Line:
Free Water Level:
20.0'
11.0'
4.0'
(e~t Holo Lo~ - Description Guido
DepTh {nterva{ usually shown to 0.1 foot, within that zone no
Stiffness - refers to more-or-less cohcstve soils and fine grained silts of
the clay-silt groups. Derived from drill action and/or sample data. Very
soft, soft. stiff, very stiff and hard arc commonl) used terms.
I-$/8". Shelby tube 3". auger flights (minute-man. 2". Auger flights
(B-50 hollow s[eml 6"-8". Larger particles are described ind~ectly by
the description on the hole log muse be considered rotan indication of
~rger pardcles,
~nified Sod Classification - This is a ~wo {etter code. See Unified
~siflcat~o~ sheet I'or (~rher defimt~on. In some cases AASHO and/or
FAA soil classifications m~y be shown Is well ~s the umfied.
~tlerbcrg Limits - u~ful ~or fine Kr~mcd dnd othe~ plastic so~s.
Rock flour - finely ground soil that ~s not plastic but otherwise appears
Muck - a modifier used to describe very soft. semi-organic deposits
Type of San,~ -
SOIL CLASSIFICATION CHART
30';~ GRAVEL
CLAY
x .,,.V/ CLAYEY CLAYEY
/
CLAYEY
CLAYEY / ORX V
/ SILTY SILTY
SILTY / SILTY
/ / ,/ G RAVEL
SAND GRA~/ELLY SAND SANDY GRAVEL ~\/
,/ \/ \ /
SAND GRAVELLY SAND SANDY GRAVEL GRAVEL
0 10 20 30 40 50 60 70 80 90 100
GRAVEL (+#4 SCREEN) % BY WEIGHT
NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LESS THAN 3% FINER THAN 0,02 mm.
GROUPS OF FROST-SUSCEPTIt~LE SOILS:
GRAVELLY SOILS CONTAINING ~I:TWEEt~ 3 AND 20% FINER THAN 0.02 mm.
F2 SANDY SOILS CONIAINING Ul'l Wi [N 3 AND 1%% I INI-F~ TI lAN 0.02 mm,
F3 a. GRAV['LLYSOILSCONI'AININ(; MORE THAN 20%1'1Ni_1~ ]'tlAN0.O2 mm, AN[) SANDY SOILS
F4 'a. ALL SILTS INCLtJ[)IN~; S/\N[)Y SIL 1'5.
C, LEAN CLAYS WIIII Iq. Abl ICI'[Y IN[J[ XL5 01' LLSS ~IIAN 12,
d. VARVED CLAYS.
.I
F
F
O0
4040 "B" STREET
ANCHORAGE, ALASKA 99503
(907) 278-1551
July 5, 1978
WoO. #D10766
BIZ'. Jesse L. Prince, Jr. and I)~25/~__~ '~~
Mr. Tony Schraef ~4~
P.O. Box 467
Subject: Evaluation of S~surface Investigation Results
for Proposed Prince Acres S~division
Gentl~nen:
Having recently completed two subsurface exploration pro-
grams for the above project, we are submitting specific
recommendations for construction of on-site sewage treatment
systems based on the results of those explorations. The
data upon which these recommendations are based is organized
as follows:
Report of Subsurface Investigation
Report of Preliminary Subsurface
Investigation
Preliminary Plat with Test Hole'Locations
Appendix A
Appendix B
Dwg. 121-28
RECOMMENDATIONS
General
A site can be characterized as two areas. Area A includes
all of Block 2 and Lots 6-24 of Block 3. We are satisfied
that each lot of this area is practical for the use of an
on-site sewage treatment system. Furthermore, we feel there
is sufficient subsurface exploration data to recommend
design values for individual wastewater treatment systems.
Area B consists of all of Block I and Lots 1-5 of Block 3.
In Area B, we believe, with minor exceptions, that each lot
is suitable for an on-site sewage treatment system; however,
we recommend further test holes and percolation tests before
specific design values can be recommended. ·
Specific Recommendations
Area A: Wastewater disposal systems in Area A may be
designed with a maximum rating for any lot of 10
minutes per inch. Additionally, we can give
specific ratings of less than 10 minutes per inch
for the following lots:
· ir. Jessee L. Prin ~, Jro and
~ir. Tony $chraef
July 5, 1978
Page 2
Block 2
Design Value
Lot 2 8 min./inch
Lot 3 5 min./inch
Lot 4 5 min./inch
Lot 5 5 min./inch
Lot 6 5 min./inch
Lot 7 5 min./inch
Lot 15 5 min./inch
Lot 16 5 min./inch
Lot 17 5 min./inch
Lot 18 8 min./inch
Lob 19 8 min./inch
Lot 20 8 min./inch
Lot 21 6 min./inch
Lot 22 8 min./inch
Lot 23 8 min./inch
Lot 24 8 min./inch
Block 3 Design Value
Lot 6
Lot 7
Lot 8
Lot 9
Lot l0
Lot 11
Lot 18
Lot 19
Lot 20
8 min./inch
8 min. linch
8 min. tinch
8 min.'inch
5 min. tinch
5 min% ~inch
7 min. ~inch
5 min. ~inch
8 min./inch
Locate system on high
ground; avoid the area
near Test Hole ~10.
Locate system on side of
lot toward cul-de-sac.
Avoid area near Test
Hole 910o
In each case, locate the system relatively high on. the lot
and avoid sink holes or drainages°
Generally, the above design percolation 9alues have been
arrived at through ~nterpretation and extrap61atiQn of test
hole and percolation data. We feel confident the values are
generally conservative° It may be possible to lower the
design percolation value on some Sots by actually placing a
test hole and running a percolation test-o~ -t~at specific
lot. If the testing can shorten the required~absorption
trench length about 10' to 15', it will save the cost of
the test in construction materials.
Mr. Jesse L. PrinJ~
Mr. Tony Schraef
July 5, 1978
Page 3
Jr. and
Area B:
With the exception of Lot 5, permafrost has been
identified on each lot in Block 1. The suspected
limits of the permafrost area, as interpreted in
the field by our senior geologist, is shown on the
attached drawing. In the design of the"lots,
sufficient area outside of the confirmed perma-
frost has been allowed in order to provide a
building site and room for a wastewater disposal
system. Since the permafrost hazard in this area
is relatively great, it would be prudent for a
deep frost probe to be conducted on each lot in
Block 1 prior to construction of houses.
We feel satisfied that all lots within Area B will
meet the Municipality of Anchorage requirements
for on-site sewage treatment systems with the
possible exceptions of Lots I and 2,. Block 1.
Depending on the results of further tests, it may
be necessary to combine these'lots into one.
Except as noted below, it will be necessary to
place one or more test holes and perform percolation
tests on each lot within Area B before specific
design values can be recommended. A possible
exception may be on Lots 3, 4 and 5, Block 3 where
two test holes and percolation tests may be adequate
if the data indicates a rating better than 10
min./inch. Another exception exists on Lot 7,
Block I where a Sandy Gravel layer was encountered
in the deep test hole and a design percolation
rate of 5 min./inch may be used.
Sufficient investigation should be performed on
each lot within Area B to prove it capable of
meeting Municipal requirements before sale of the
lot.
The actual soil conditions are expected to vary somewhat
within the lots as the lots are quite large. The abov~
recommendations are based on the results of test holes which
examine only a 6" or 8" diameter hole. Excavations for
seepage trenches for typical houses will be on ~he order of
50 feet long. These will provide a much clearer picture of
the subsurface conditions than the test holes. Each trench
should be carefully examined during excavation. If the soil
conditions turn out to be more favorable than predicted, it
may be possible to economize some systems by reducing length
of the trench. Conversely, if the soil appears tighter than
anticipated, then it may be necessary to enlarge.the system
or to use an alternate location on the loto The chief value
Jr. and ~
Mr. Jesse L. Prin.~,
Mr. Tony Schraef
July 5, 1978
Page 4
of the drilled holes is in establishing the feasibility of
on-site systems, while examination of the trench is expected
to provide better specific information for each lot.
We trust the above is sufficient for the printed state of
progress on the project. If we can be of further assistance,
please do not hesitate to contact us.
Very truly yours,
ALASKA TESTLAB
RMH:bj:rb
Enclosures
APPROVED. . ;
Melvin R. Nichols, PE
Laboratory Manager
4040 "8" STREE~
ANCHORAGE, ALASKA 99503
(907) 278-1851
June 28, 1978
W.O. #D10766
Mr o Jesse L. Prince,
~. Tony Schraff
P.O. Box 467
Girdwood, AK 99587
Jr.
Subject:
Subsurface Investigation for Proposed
Prince Acres Subdivision Located within the
SW Quarter, Section 2, T.15N., R.1W.,
Seward Meridian, Alaska
Gentlemen:
Transmitted herein are the results of the subsurface investiga-
tion for the above project. The scope of this investigation
is to be. determine the suitability of the site for on-site
sewage treatment systems, and exploration to determine the
approximate extent of permafrost. Accompanying this report
are the following:
Test Hole Logs Table A
Standard Explanatory 'Information Sheets 1-3
Grain Size Distribution Curves Sheets 4-6
Report on Preliminary Investigation Appendix B
Idealized Soil Profiles Sheets 7-9
Preliminary Plat Showing Test Hole
Locations
Dwg. 121-28
The site was first investigated by Alaska Test!ab in March 1978.
A serie~ of 12 additional test holes were p.lac~d:in May 1978
.and the results are transmitted herein. TeSt ~h~les were
logged and the soils visually classified by Mr. O.M. Hatch,
geologist with Alaska Testlab. Test hole locations are
shown on the attached preliminary plat.
Samples of soil were sealed in plastic bags and returned to
the laboratory for determination for moisture and dry strength.
In the laboratory, samples of similar color, texture, and
particle size distribution were grouped together and given
an arbitrary group designation. Grain size analysis was
performed on composite samples of important groups rather
than on individual samples. Five general soil types were
encountered and are listed below by their group designation.
These are correlated with the groups from the preliminary
investigation.
Mr. Jesse L. Pri~,
Mr. Tony SChraff
June 28, 1978
Page 2
Jr.
Group A
is a brown Silty Sandy Gravel. This group is
moderately frost susceptible, rated F-1. Unified
classification is GM. This group is predominant
on the upper portion of the site and should be
fairly permeable.
Group C
is a grey Sandy Silt. This group is highly frost
susceptible, rated F-4. Unified classification is
ML. .Group C has low plasticity.
Group D
is a grey slightly Silty Sand.
frost susceptible, rated F-2.
tion is SM.
Group D is moderately
Unified classifica-
Group E
is a brown to grey Silt. This group is highly
frost susceptible, rated F-4. Unified classifica-
tion is ML. This group is non-plastic.
Group H
is a grey Sandy Silty Clay. This group is highly
frost suscep-~i~le, rated F-4. Unified classifica-
tion is CL. This group 'has medium plasticity.
When drilling was completed, a 3/4" slotted PVC pipe was
inserted in each hole to facilitate the measurement of the
water level. Percolation tests were then performed on
selected holes. Slotted PVC pipe was left in the remainder
of the holes to facilitate future percolation tests if
necessary. For the test, the holes were filled with water
and left overnight to saturate. On returning the next day,
the holes were refilled with water and the drop in the water
level carefully monitored over the next 60 minutes. The
following table summarizes the observed minimum percolation
rates.
Test Hole #
Minimum
Percolation Rate
Required s.f.
per Bedroom
1 6.2 min/inch 140
7 2.0 min/inch 85
11 1.8 min/inch 85
16 8°0 min/inch 150
In test hole #8 water was at 7.3' before the initial fill
and no percolation test was performed. In test hole ~25,
water dropped only to 3.6' overnight after the initial fill
and percolation test was not performed~
Permafrost was encountered in the low area in the northwest
corner of the site. Deep frozen soils were encountered in
test holes #13, #17, #19, %20, #22, and %24. Test holes
Mr. Jesse L. Prin~~
Mr o Tony Schraff
June 28, 1978
Page 3
~18 and ~21 were conducted as deep frost probes specifically
designed to detect deep frozen soils. These were placed
near the perimeter of the apparent permafrost area. No deep
frozen soils were identified in either of the deep frost
probes°
The idealized soil profiles shown accompanying this report
are based on the logs only at the actual test hole location.
Soil profiles between those locations are postulated. The
topographical relief of the site has been exaggerated with
respect to.the horizontal, and the depth of the test holes
has been exaggerated with respect to the topography.
It is trusted that the foregoing meets your present require-
ments. If you have any questions or if we can be of further
assistance, please do not hesitate to contact us.
Very sincerely,
ALASKA TESTLAB
R. Mark Hanson
RMH:rb
Enclosures
PPROVED
Melvin R. Nichols, PE
Laboratory Manager
Test Hole #14
Table A
WO $D10766
Logged By: O.M.
Date: 5-17-78
Hatch
Depth in Feet
From TO
0.0' 2.0'
2.0' 16.0'
Soil Description
Brown Peat (Pt), damp, soft.
F-l, brown Silty Sandy Gravel (GM) occasional
cobbles, damp, medium density, rounded and sub-
rounded particles, large gravel 10'-14', large
rock 14'-16'
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
None Observed
None Observed While Drilling
Sample Depth
1 5.0'
2 10.0'
3 16.0'
Type of Dry
Blows/6" M% Sample Strength Group Unified
G
G
G
Remarks:
e
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.-.-
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #15
Table A
WO 9D10766
Logged By: O.M.
Date: 5-17-78
Hatch
Depth in Feet
From To
0o0' - 1o0'
1.0' - 6.0'
6.0' - 10.0'
10,0~ - 16.0'
Soil Description
Brown Peat (Pt), damp, soft.
F-l, brown Silty Sandy Gravel, (GM), all sand
sizes present, medium to ~ density, sub-
rounded particles to 6"
NFS to F-2, brown Gravelly Sand (SP-SM), all
sand sizes present, slightly Silty, damp,
medium density, rounded and subrounded particles
to 2".
F-l, brown to grey Silty Sandy Gravel (GM), all
sand sizes present, damp, medium to high density,
subrounded particles to 3".
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
None Observed.
None'Observed While Drilling
Sample Depth
I 5.0'
2 10.0'
3 16.0'
Type of Dry
Blows/6" M% Sample Strength Group
G
G
G
Unified
Remarks:
2.
3.
4.
5.
6.
Type of Sample,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium,
Group refers to similar material, this
General Information, see Sheet 1.
Frost and Textural Classification, see
Unified Classification, see Sheet 3.
G=Grab, SP = Standard Penetration,
H=High.
study only.
Sheet 2.
Test Hole 916
Table A
WO #D10766
Logged By~ O.M.
Date: 5-17-78
Hatch
Depth in Feet
From To
0.0' - 2.0'
2.0' - 7°5'
7.5' - 16.0'
Soil Description
Brown Peat (Pt), damp, soft.
F-l, brown Silty Sandy Gravel (GM), damp,
medium density.
NFS to F-2, brown Gravelly Sand (SP-SM),
slightly Silty, all sand sizes present, damp,
mediu~a density, rounded and subrounded
particles to 2", becomes siltier with depth.
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
None Observed
None Observed While Drilling
Sample Depth
1 5.0'
2 10.0'
3 16.0'
Type of
Blows/6" M% Sample
G
G
Dry
Strength Group
Unified
. Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #17
Depth in Feet
From To
0.0' - 3.0'
3.0' - 8.0'
8.0' - 10.0'
Table A
WO 9D10766
Logged By: O.M.
Date: 5-18-78
Soil Description
Brown Peat (Pt), damp, soft.
F-4, brown Sandy Silt (ML), frozen,
lensing, contains much ice.
F-4, grey Sandy Silt (~-~) ~
with ice
Hatch
Bottom of Test Hole:
Frost Line:
Free Water Level:
10.0'
0.5'-8.0'
None Observed While Drilling
· Sample Depth
I 6.0'
2 10.0'
Type of Dry
Blows/6" M% Sample Strength Group Unified
43.5 G M E ML
28.1 G M-H H ~
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, ~=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #18
Depth in Feet
From To
0.0' - 2.0'
2.0' - 7.0'
7.0' - 12o0'
12.0' - 15.0'
15.0' - 17.5'
17.5' - 20.0'
20.0' 22.0.'
22~0' 27.0'
27.0' 29.5'
29.5' 31.5'
Bottom of Test Hole:
Frost Line:
Free Water Level:
(Continued)
Table A
WO #D~0766
Logged By: O.M. Hatch
Date: 5-18-78
Soil Description
Brown Peat, (Pt), damp.
F-4, brown and grey Sandy Silt (M_L), damp,
soft to stiff, PL±.
F-4, grey Clayey Silt (CL), damp to wet,
soft, Pi+.
F-4, grey Silt (ML), saturated~ NP, dilatent.
F-4, grey Clayey Silt (CL), damp, soft, PI+.
F-4, grey Silt (ML), slightly Sandy, damp,
stiff, NP.
F-2, grey Silty Gravelly Sand, (SM), with
Gravelly Sandy Silt layering, damp.
F-4, grey Silt (ML) with trace'sand and gravel,
damp, stiff, PL+.
F-3 to F-4, grey Sandy Silt (SM) to Silty
Sand (SM), sat'urated, medium density, NP.
F-2, grey Silty Sand (SM), fine grained, saturated,
medium denslty~-~.
31.5'
0°5'-2.0'
12.0' While drilling
Test Hole ~18 (Continued) W.O. ~D10766
Type of Dry
Sable Depth Blows/6" M% S~L~le Strength Group
1 2.5'- 4.0' 9/5/6 17.7 SP M-H H
2 5.0'- 6.5' 4/5/6 18.6 SP H H
3 7.5'- 9.0' 2/3/5 30.7 SP H H
4 10.0'-11.5' 2/2/3 22.9 SP M-H H
..5 12.5'-14.0' 4/6/7 24.7 SP L-M C
6 15.0'-16.5' 2/4/5 25.2 SP M-H C
7 17.5'-19.0' 5/8/18 25.3 SP M H
8 20.0'-21.5' 9/28/28 13;0 SP M
9 22.5'-24.0' 6/8/11 20.9 SP M-H H
10 25.0'-26.5' 8/11/11 20.3 SP H H
11 27.5'-29.0' 11/15/17 23.9 SP N-L E
12 30.0'-31.5' 7/11/12 24.6 SP L D
P~arks:
Unified
1. Type of San~le, ~ C~rab, SP = Standard Penetration,
U = Undisturbed.
2. Dry Strength, N=None, L=LOw, Lf.---.--Medium, H=High.
3. Group refers to similar material, this study only.
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified Classification, see Sheet 3.
Tel~.
oF
34
36
37
37
37
37
38
39
39
39
39
38
Test Hole ~19
Table A
WO #D10766
Logged By: O.M.
Date: 5-18-78
Hatch
Depth in Feet
From To
0.0' - 2.5'
2.5' - 8.0'
8.0' - 10.0'
Soil Description
Brown Peat (Pt).
F-4, brown Sandy Silt (ML), frozen,
wet with ice lensing at 4', stiff,
F-4, brown Gravelly Sandy Silt,
damp, stiff.
damp to
Pi+.
(ML), frozen
Bottom of Test Hole:
Frost Line:
Free Water Level:
10.0'
0.5.'-10.0'+
None Observed While Drilling
Sample Depth
1 5.0'
2 10.0'
Type of Dry
Temp. °F M% Sample Strength Group Unified
31 36.7 G H E ML
31 21.3 G M - ML
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
Generai Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #20
Depth in Feet
From To
0.0' - 1.5'
1.5' - 10.0'
Table A
WO #D10766
Logged By: O.M. Hatch
Date: 5-18-78
Soil Description
Brown Peat, Pt.
F-4, brown Gravelly Sandy Silt (~&L), frozen,
damp to wet with minor ice ~6-~kets, stiff,
rounded particles to 2".
Bottom of Test Hole:
Frost Line:
Free Water Level:
10.0'
0.5'-10.0'+
None Observed While Drilling
Sample Depth
I 5.0'
2 10.0'
Type of Dry
Blows/6" M% Sample Strength
20.6 G M-H
18.9 G M
Temp.
Group Unified °F
H ~-CL 31
H ML-CL 31
1. Type of Sample, ~=Grab, SP = Sta~d Penetration,
U = Undisturbed.
2. Dry Strength, N=None, L=Low, .~=~.~=dium, H=High.
3. Group refers to similar material, this study only.
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified Classification, see Sheet 3.
Test Hole #21
Depth in Feet
From To
0.0' - 1.0'
1.0' - 4.5'
4.5' - 7.0'
7.0' - 9.0'
9.0' - 12.0'
12.0' - 14.0'
1410' - 27.0'
27.0' - 31.5'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Table A
WO #D10766
Logged By: O.M.
Date: 5-18-78
Hatch
Soil Description
Brown Peat (Pt)o
F'4, brown Gravelly Sandy Silt (ML), damp,
stiff, rounded and subrounded particles to 2'~.
NFS, brown Sandy Gravel (GP), damp, medium
density, trace Silt, rounded and subrounded
particles to 3".
F-4, brown Gravelly Sandy Silt (ML), damp,
stiff, NP, rounded and subrounded particles
to 2".
F~2, brown Silty Sand (SM), with Sandy Silt
lensing, fine grained, damp, medium density.
F-4, brown Sandy Silt (M~) with Silty Sand
lensing, damp, stiff, NPo
F-2, brown to grey Silty Sand (SM) fine grained,
with silt lensing, wet to saturated, medium
density.
'F-4, grey Silt (ML) with Silty Sand lensing,
saturated, stiff, NP.
31.5'
0.5'- 1.0'
16o0' while drilling
(Continued)
Test Hole #21
Sample Depth
1 2.5'- 4.0'
2 5.0'- 6.5'
3 7.5'- 9.0'
4 10.0'-11.5'
5 14.0'-15.5'
6 15.0'~16.5'
7 17.5'-19.0'
8 20.0'-21.5'
9 22.5'-24.0'
10 25.0'-26.5'
11 27.9'-29.5'
12 30.0'-31.5'
(Continued) W.O~ #D10766
Type of Dzy T~.
Blows/6" M% S~¥1e Strength Group Unified eF
6/13/14 18.0 SP M-H H ML-CL 37
14/24/29 3.7 SP M A ~ 42
9/18/14 12.6 SP L-M A (~ 40
9/15/16 11.5 SP L SM 41
17/20/23 20.1 SP L-M E ML 41
15/19/25 18.2 SP L-M E ML 41
17/24/34 22.2 SP M E ML 40
15/23/25 19.8 SP M E ML 40
14/23/40 19.9 SP M E ML 40
24/30/46 19.6 SP M-H E ML 40
20/37/45 21.1 SP L-M E ML 41
20/43/70 18.0 SP M E ML 42
· Remarks:
1. Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
2. Dry Strength, ~None, L=Low, ~Medium, H=~gh.
3. Group refers to similar material, this study only.
4o General Information, see Sheet 1.
5. Frost and Textural Classification, see' Sheet 2.
6. Unified Classification, see Sheet 3.
Test Hole #22
~epth in Feet
From To
0.0' - 5.0'
5.0' - 10.0'
Tabls A
WO #D10766
Logged By? O.M.
Date: 5-19-78
Hatch
Soil Description
Brown Peat (Pt), damp.
F-4, blue-grey Clayey Silt (CL),
Pi+.
damp,
stiff,
Bottom of Test Hole:
Frost Line:
Free Water Level:
10.0'
0.5'-3.0'
None Observed Whils Drilling
Sample Depth
1 5.0'
Temp Type of
°F Sample
36 G
Remarks:
1. Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
.2. Dry Strength, N=None, L=Low, M=Medium, H=High.
3. Group refers to similar material, th~s study only.
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified Classification, see Sheet 3.
Test Hole ~23
Depth in Feet
From To
0.0' - 2.5'
2.5' - 12.5'
12.5' - 15.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
Table A
Soil Description
WO #D10766
Logged By: O.M. Hatch
Date: 5-19-78
Brown Peat (Pt), damp,
F-4, brown Claye~ Silt
stiff, P1-.
soft.
(CL), damp to saturated,
F-4, olive Gravelly Sandy Silt (ML), wet,
stiff, rounded particles t~ ~.
15.0'
0.5'-1.0'
8.0' while.drilling
Type of
Temp. °F Sample
1 5.0' 35 G
2 10.0' 37 G
3 15.0' 39 G
Remarks-.
1. Type of Sample, G=Grab, SP Standard Penetration,
U = Undisturbed.
2. Dry Strength, N=None, L=Low, M=Medium, H=High.
3. Group refers to similar material, this study only.
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified Classification, see Sheet 3.
Test Hole #24
De~th in Feet
From To
0.0' 3.0'
3.0' 10.0'
Table A
WO #D10766
Logged By: O.M.
Date~ 5-19-78
Soil Description
Brown Peat (Pt).
F-4, brown and grey Gravelly Sandy Silt
damp, stiff, frozen.
Hatch
(ML) ,
Bottom of Test Hole:
Frost Line:
Free Water Level:
10.0'
0.5'-10.0'+
None Observed while drilling
Type of
Sample Depth Temp. °F Sample
1 5.0' 31 G
2 10.0' 31 G
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.~.~
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #25
Depth in Feet
From To
0.0' - 0°5'
0.5' - 7.0'
7.0' 15.0'
Table A
WO #D10766
Logged By: O.M.
Date: 5-19-78
Hatch
Soil Description
Brown Peat (Pt), damp.
F-4, bro%~ Gravelly Sandy Silt (ML), damp,
stiff, NP, rounded and subrounded particles
to 2"
F-4, brown Sandy Silt (ML) with trace gravel,
damp, stiff, NP to P1-.
Bottom of Test Hole:
Frost Line:
Free Water Level:
15.0'
None Observed
None Observed While Drilling
Sample Depth
Type of
Temp. °F Sample
5.0' 42 G
10.0' 42 G
15.0' 42 G
Remarks:
2.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole LoS - Description Guide
$~cision of a laboratory testing procedure. If the log includes soils samples,
t,~ i/erify the field exammatzon.
logs often include the following items:
De th Interval - usually shown to 0.1 foot, within that zone no
~ge in soil type was observed through drill action, direct
observation or sampling.
Frost Classification - NFS. Fl, F2. FS, F4. see "Soil Classification
Chart"
Texture of Soil - An engineering classification of the soils by particle
size and propornon, see "Soil Classification Chart", note the
proportions are approxtmate and modifications to the soil group due to
stratification, inclusions and changes in properties are included.
Moisture Content - this is a quabtative measure:
dry, no or little apparent surface moisture.
damp, moisture forms portion of color, less than plastic limit,
wet. no fice water, often soft if cohesive soil.
~aturated. free water may be squeezed out, ifa free draining soil;
dilatent at natural moisture content, if a non-plastic silt or fine
~nd. iThe moisture content is furthdr defined by reference to
LW, NP, M%or dilatency.I
Density - refers to more-or-less non-cohesive soils, such as sand gravel
mixtures with or without a fine fraction, derived from drilling action
and/or sample 'data: usually described as: very loose, loose, medium
dense, very dense. General intent ~s to portray earthwork
Stiffness -- refers to n, ore-6r-less cohesive soils and fine grained silts of
the clay-silt groups. Derived from drill action andtor sample data. Very
soft, soft, stiff, very stiff and hard are commonly used terms.
Particle s~ze - The largest particle recovered by the split spoon is
1-318", Shelby tube 3". auger flights Immute-man/ 2", Auger flights
(B-50 hollow stem} 6"-8". Larger particles are described indirectly by
action of the drilling and are referred to as cobbles, 3" to 8" or
boulders 8"+. Therefore when reviewing the gradation sheets, if any,
the description on the hole log must be considered for an 4ndication of
larger particles.
Unified Soil Classification - This is a two letter code. See Unified
Classification sheet for further definition. In some ~ases AASHO and/or
FAA soil classificatinns may be shown as well as the unified,
Attetberg Limits -- useful for fine grained and other plastic soils.
F_]l; natural moisture content believed to be less than plastic limit
Fl+; natural moisture content belieYed to be between plastic and liquid
'fi-mits
L_.._~; natural moisture content believed to be greater than liquid limit
N.~; non.plastic, useful as a modifying description of some silty
Dilatenc,~ -- is the ability of water to migrate to the surface of a
Rock flour -- finely ground soil that is not plastic but otherwise appears
similar to a clayey silt.
Organic Content - usually described as Peat. PT, iometimes includes
discrete particles such as wood, coal, etc. as a modifier to an inorganic
soil. Quantity described as: trace, or an estimate of volume, or, in case
of all organtc,- as Feat. This may include 'tundra, muskeg and bog
Muck -- a modifier used to describe very soft, semi-organic deposits
usually occuring below a peat deposit.
Amorphus peat - organic particles nearly or fully disintegrated,
Fibrous Peat -- organic particles more-or-less intact,
Bottom of Testhole -- includes last sample interval,
Frost Line -- seasonal frost depth as described by drilling action and/or
~amples at the time of drilling.
Frozen Ground -- other than frost line, described by samples, usually
includes description of ice content, often will include modified Unified
Classificanon for frozen soils - this is a special case related to
permafrost studies.
Free Water Level - The free water level noted during drilling. This is
not necessarily the static water table at the time of. drilling or at o.ther
seasons, Static water table determinanon m other than very permeable
soils requires observation wells or piezometer installations, u~ed oniy m
special cases.
Blow/6" -- The number of blows of a 140 weight free falling 30" to
advance a 2" split spoon 6": the number of blows for a 12" advance is,
by definition, the standard penetration.
,,4% -- natural moisture content of the soil sample, usually not
performed on clean sands or gravels beIow the water table.
Type of Sample -
S__P, refers to 2" split spoon driven into the soil by 140 pound
weight, a disturbed sample,
.~ thin wall tube, "Shelby" used to obtain undisturbed samples
of fine grained soil,
G, "grab" disturbed sample from auger fl~ghtsorwalloftrench,
.~., cot sample, undisturbed sample from wall of trench.
Dry Strength - a useful indicator of a soil's clayey fraction. N=None,
L=Low, M=Medium, H=High
Group - The samples are placed into apparently similar groups based
on color and texture and are arbitrarily assigned a group letter. Further
disturbed tests including Atterberg Limits, grain size, moisture~iensity
relationship, etc. may be performed on the group and ate assumed to
reflect the gen?al distrubed characteristics of tile soils assigued to the
group. This Is an importaut phase of the soil analysis and is used to
SOIL CLASSIFICATION CHART
30% GRAVEL
CLAY
'~' \ CLAYEY CLAYEY /
CLAYEY ORX X CLAYEY
SILTY SILTY
OR
SILTY
/
SAND GRAVELLY SAND ~ SANDY GR~VEL
S I LTY
GRAVEL
SAND GRAVELLY SAND ~NDY GRAVEL
0 10 20 30 40 50 60 70 80 90 I u0
GRAVEL (+~4 SCREEN) % BY WEIGHT
NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTA NING LESS THAN 3% FINER THAN 0.02 mm.
GROUPS OF FROST-SUSCEPTIBLE SOILS;
FI GRAVELLY 5OILS CONTAINING BETWEEN 3 AND 20% FINER THAN 0.02 mm.
F2 SANDY SOILS CONTAINING BETWEEN 3 AND 15% FINER THAN 0.02 mm.
F3 a, GRAVELLY SOILS CONTAINING MORE THAN 20% FINER THAN 0.02 mm, AND SANDY SOILS
(EXCEPT FlaIL SILTY. SANDS) CONTAINING MORE THAN 15% FINER THAN 0.02 mm.
b, CLAYS WITH PLASTICITY NDEXES OF MORE THAN 12. EXCEPTVARVEDCLAYS.
F4 a. ALL SILTS INCLUDING SANDY SILTS.
b. FINE SILTY SANDS CONTAINING MORE THAN 15% FINER THAN 0.02 mm,
c. LEAN C LAYS WITH PLASTICITY INDEXES OF LESS THAN 12.
d. VARVED CLAYS,
o ~
o ~ o $ o ~ o
0 0
APPENDIX A'
APPENDIX B
4040 "B" STREET
ANCHORAGE, ALASKA 99503
(907) 278-1551
May 2, 1978
W.O. #D10766
Mr. Jesse L. Prince, Jr.
Mr. Tony Schraff
P.O. Box 467
Girdwood, AK 99587
Subject:
Preliminary Subsurface Investigation
for proposed Prince Acres Subdivision
Located ~ithin the SW 1/4, Sec. 2,
T.15N., R.1W., Seward Meridian, Alaska
Gentlemen:
As instructed by Mr. A1 Lahunum of DOWL Engineers, we have
performed the preliminary subsurface investigation on the
subject property. Included here are:
Test Hole Logs
Standard Explanatory Information
Grain Size Distribution Curves
Table A
Sheets 1-3
Sheets 4-5
Test hole locations are show~n on the attached preliminary
plat. Exploration consisted of 13 test holes. A Nodwell
mounted Mobile drill B-50 rig was used to advance the holes.
The rig was equipped with a solid flight auger. The drilling
equipment is owned and operated by Denali Drilling, Inc.
Test holes were logged and located in the field by Mr. T.L.
Barber or Mr. O.M. Hatch, geologists with Alaska Testlab.
As field samples were recovered, they were sealed in plastic
bags to protect the samples and retain their natural moisture
content. In the laboratory, the samples were visually.
classified and the moisture content and dry strength of
these samples determined. Samples of similar color, tex-
ture, and particle size distribution were grouped together
and given an arbitrary group designation. Grain size analysis
was then performed on composite samples of important groups.
rather than on individual samples. Five general.soUl types
were encounted and are listed below by their group designation
for reference to test holes.
Group A
is a brown Silty Sandy Gravel. This group is
moderately frost suscept~-~, rated F-1. Unified
classification is GM.
Mro Jesse L. Prin~, Jr.
Mr. Tony Schraff
May 2, 1978
Page 2
Group B
Group C
Group D
is a brown Sandy Gravel with traces of Silt. This
group contains many cobbles and is typically quite
dense and is marginally frost susceptible, being
rated F-1. Unified classification is GP/GM. This
is the most important group on the site.
is a brown Sandy Silt. This group is highly frost
susceptible rated F-4. Unified classification is
ML.
is a Silty Sand with trace of Gravel. This group
is highly frost susceptible, rated F-2/F-3.
Unified classification is SM.
Group E is a grey Silt. This group is highly frost
susceptible, rated P-4. Unified classification is
ML. This group was encountered Only beneath the
peat in the deep peat area. Soil contains some
organic and is plastic.
The grain size distribution curves for the groups described
may not be entirely representative of the soil in the field.
Particularly where large gravel sizes and cobbles exist.
This is because the larger particles are usually not re-
covered from the auger flight. Thus, the soil in the field
typically has a higher gravel content than indicated on the
grain size distribution curves.
The site generally' looks favorable for subdivision develop-
ment. Percolation tests have not been performed, however, a
3/4" slotted PVC pipe has been left in each test hole to
facilitate future percolation tests. Based on the analysis
of the soils, we believe percolation rates will be satis-
factory over most of the site. However, we propose to
perform several percolation tests in the existing test holes
to verify this opinion.
Test hole #10 indicated probable bedrock and shallow ground
water. We do not believe this condition exists over a
particularly large area. Three additional test holes in the
general vicinity of test hole #10 are proposed to more
closely determine the extent of the shallow bedrock condi-
tion.
Test hole %12 shows sufficient depth of peat to make de-
velopment of that area uneconomic. Test hole ~13 located on
a small mound near %12 shows significant depth of frozen
peat. Several additional test holes are recommended to
define the limits of the deep peat condition.
Mr. Jesse L. Pril~, Jr.
Mr. Tony Schraff
May 2, 1978
Page 3
No free ground water was observed in most of the test holes.
When free ground water was encountered, the depths Ks shown
on the test hole logs. The depths given should be given
with caution, however, since these were only depths during
drilling. Observation wells have been left at the test hole
locations but have not been checked since the time of
drilling. Also, the free water level may vary seasonally
with precipitation.
We trust the foregoing is sufficient to your immediate
needs. Should you have any questions or if we can be of
further assistance, please do not hesitate to contact us.
Very sincerely,
ALASKA TESTLAB
R. Mark Hansen
RMH:rb
Enclosures
Melvin R. Nichols, P.E.
Laboratory Manages
Test Hole
Depth in Feet
From To
0.0' - 0.5'
0.5' - 2.5'
2.5' - 7.0'
Table A
WO #D10766
Logged By: O.M. Hatch
Date: 3-7-78
Soil Description
Brown Peat, Pt, damp, soft.
Cobbles, damp, medium density, sharp and
subrounded particles to 12".
'F-l,'brown Silty Sandy Gravel, GM, many
cobbles, damp, medium to high density.I
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
1 5.0'
7.0t
Trace at
6.0I
Remarks:
surface
Driling refusal at 7.0'
: Type of Dry
Blows/6" M%: Sample Strength Group Unified
-- 11.4 G N A GM
Remarks: 1.
e
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #2
Table A
WO #D10766
Logged By: O.M.
Date: 3-7-78
Hatch
Depth in Feet
From To
0o0' - 1.0'
1.0' 5.0'
5.0' 16o0'
Soil Description
Brown Peat, Pt, damp, soft.
F-l, brown Silty Sandy Gravel, GM, damp,
to medium density, sharp and subrounded
particles.
low
F-l, brown Silty Gravel, GP-GM, with trace
sand, occasional cobbles, damp, medium den-
sity, sharp and subrounded particles.
Bottom of Test Hole:
Frost Line:
Free Water Level:
16.0'
Trace at surface
None Observed
Sample Depth
I 5.0'
2 10.0'
3 16.0'
Type of Dry
Blows/6" M% Sample Strength Group Unified
-- 18.7 G L B GP-GM
-- 6 . 8 G L-N B GP-GM
-- 10.3 G .- L-N B GP-GM
Remarks: 1.
e
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low,'M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #3
Depth in Feet
From To
0.0' - 2.0'
2.0' - 7.0'
7.0' - 10.0'
Table A
WO #D10766
Logged By: O.M.
Date: 3-7-78
Soil Description
Brown Peat, Pt, damp, soft.
F-4, brown Silt, OL, damp, soft to stiff,
PL+, contains traces gravel and organics.
F-l, brown Silty Gravel, GM, many cobbles,
few boulders, damp, dense, subrounded
particles.
Hatch
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
1 5.0'
2 10.0'
10.0'
Trace at surface
None Observed
Type of Dry
Blows/6" M% Sample Strength. Group Unified
-- 70.1 G N - GL
-- 12 . 7 G N A GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole ~4
Depth in Feet
From To
0.0' - 0.5'
0.5' - 11.0'
11.0' - 16.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Table A
WO #D10766
Logged By: O.M. Hatch
Date: 3-8-78
Soil Description
Brown Peat, Pt, damp, soft.
F-l, brown Silty Sandy Gravel, GM, damp,
medium to high density, many cobbles, few
boulders, sharp and subrounded particles.
F-4, brown Gravelly Sandy Silt, damp, stiff.
16.0'
0.5'
None Observed
Sample Depth
1 5.0'
2 1G.0'
3 15.0'
Type of Dry
Blows/6" M% Sample Str~en~th Group
-- 14.7 G' N A
-- 9.1 G N B
-- 6.7 G L A
Unified
GM
GP-GM
GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #5
Tabie A
Wo #D10766
Logged By: O.M.
Date: 3~8~78
Depth in Feet
From._ To
0.0' - 0.5'
0.5' - i6.0'
...... Soil Description
Brown Peat, Pt, damp, soft,
F-i; brown Silty Sandy Gravel, GP-GM,
occasional cobbles, damp, medium density,
sharp and subrounded particles,
Bottom of Test Hole~
Frost Line:
Free Water Level:
Sample Depth
1 5.0'
2 10.0'
3 15.0'
16.0'
0~5'
None ObserVed
T~pe of Dry
Blows/6~ M% sample Strength Group
11,2 ~ N A
13,i d L~N B
8.i d N B
Remarks: 1.
e
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only,
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3,
Hatch
Unified
GP~GM
GP~GM
Test Hole #6
Depth in Feet
From To
0.0' - 1.0'
1o0' - 2.5'
2.5' - 16.0'
Table A
WO #D10766
Logged By: O.M.
Dat~: 3-8-78
Hatch
Soil Description
Brown Peat, Pt, damp, soft.
F-4, brown Sandy Silt, ML, damp, stiff, NP.
F-l, brown Silty Sandy Gravel, GP-GM, damp,
medium to high density, occasional cobbles,
subrounded particles.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
I 5.0'
2 10.0'
3 15.0'
16.0'
0.5'
None Observed
Type of Dry
Blows/6" M% Sample · Strength Group
-- 8.8 G
-- 5.6 G
-- 4.3 G
N B
N ' B
N B
Unified
GP-GM
GP-GM
GP-GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard 'Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #7
Depth-in Feet
From To
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample , Depth
1 5.0'
2 10.0'
3 15.0'
Table A
WO #D10766
Logged By: O.M.
Date: 3-8-78
Hatch
Soil Description
Brown Peat, Pt, damp, soft.
F-4, brown Sandy Silt, ML, damp, stiff, NP.
F-l, brown Silty Sandy Grave~ GP-GM, damp,
medium to high density, occasional cobbles,
subrounded particles.
F-l, brown very Silty Sandy Gravel~ GM, damp,
medium density, subrounded particles to 3"
F-l, brown Silty Sandy Gravel, GP-'GM, damp,
medium to high density, occasional cobbles,
subrounded particles.
16.0'
0.5'
None Observed
Typ~ of Dry
Blows/6". M% Sample Strength Group
Unified
-- 6.6 G N B GP-GM
-- 8.1 G N B GP-GM
-- 6.8 G N B GP-GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3. '
Test Hole #8
Depth in Feet
From To
0.0' - 0.5'
0.5' - 1o5'
1.5' - 16.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Sample Depth
Table A
WO #D10766
Logged By: O.M.
Date: 3-8-78
1 5.0'
~ 2 10.0'
/i 3 15.0'
Soil Description
Brown Peat, Pt, damp, soft.
F-4, brown Sandy Silt, ML, damp, stiff, NP.
F-l, brown Silty Sandy Gravel, GP-GM, damp,
occasional cobbles, few boulders, subrounded
particles.
16.0'
None Observed
Hatch
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
-- 9.8 G N B GP-GM
-- 5.5 G N B GP-GM
-- 3.6 G N B GP-GM
Type of Dry
Blows/6" M% Sample Strength Group Unified
Test Hole #9
Table A
WO #D10766
Logged By: T,L.
Date: 3-9-78
Barber
Depth in Feet
From To
0.0' - 0.8'
0.8' 7.0'
7.0' - 15.0'
Soil Description
Brown Peat, Pt, wet, soft.
NFS to F-l, brown Sandy Gravel, GP-GM,
trace silt, damp, dense, subrounded and
· rounded particles.
F-2, brown Silty Gravelly Sand, SM, damp,
medium density, subrounded and rounded
particles.
with
Bottom of Test Hole:
Frost Line:
Free Water Level:
15.0'
None O'bserved
Sample Depth
5.0'
10.0'
15.0'
Type of Dry
Blows/6" M% Sample Strength Group
5.2 G N B
3.8 G N B
5.0 G N -
Unified
GP-GM
GP-GM
SM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole 910
Depth in Feet
From To
Table A
WO #D10766
Logged By: T.L.
Date: 3-9-78
Barber
0.0' 0.5'
0.5' 7.5'
7.5I
Soil Description
Brown Peat, Pt.
F-l, brown Silty Sandy Gravel, GM, damp to
saturated, dense, sharp particles, occasional
cobbles.
Either bedrock or large boulder
Bottom of Test H01e:
Frost Line:
Free Water Level:
Sample Depth
1 5.0'
7.5' Remarks:
None Observed
7.5° ..
Drilling refusal at 7.5'
Type of Dry
Blows/6" M% Sample Strength
-- 15.0 G L
Group
A
Unified
GM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole 911
Depth in Feet
From To
0.0' - 1.0'
1.0' - 8.0' ..
8.0' - 15.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Table A
WO #D10766
Logged By: T.L. Barber
Date: 3-9-78
Soil Description
Brown Peat, Pt, damp to wet.
F-4, brown Gravelly Sandy Silt, GM.
F-l, brown ~ Sandy Gravel, GP-GM,
damp, medium densi-~, 'r~ and subrounded
particles.
15.0'
None Observed
None Observed
Sample Depth
1
5.0~
10.0'
15.0'
Type of Dry
Blows/6" M% Sample Strength Group
-- 11.1 G N A
-- 5.9 G N -
-- 8.1 G N B
Unified
GM
GM
GP-GM
Remarks: I.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #12
Depth in Feet
From To
0.0' 17.0'
17.0' ~ 19.0'
Table A
WO #D10766
Logged By: T.L. Barber
Date: 3-9-78
Soil Description
Brown Peat, Pt, wet to saturated, soft.
F-4, grey Clayey Silt, CL, soft to stiff,
PL+.
Bottom of Test Hole:
Frost Line:
Free Water Level:
19.0'
None Observed
1.0'
Sample Depth
Type of Dry
Blows/6" M% Sample Strength Group Unified
I 19.0'
30.1 G H -- CL
Remarks: 1.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
-Group refers to similar material,' this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #13
Depth in Feet
From To
0.0' - 16.0'
16.0' - 20.0'
Table A
WO #D10766
Logged By: T.L. Barber
Date: 3-9-78
Soil Description
Brown Peat, Pt, wet to saturated,
0°0' to 11.0'
frozen hard
F-4, grey Clayey Silt, CL, saturated, stiff,
PL+.
Bottom of Test Hole:
Frost Line:
Free Water Level:
20.0'
11.0'
4.0'
Test Hole LoS - Description Guide
logs often include the followhsg items:
- usually shown to 0.1 foot, within that zone no
ge in soil type was observed through drill action, direct
observation or sampling.
Frost Classification - NFS, Fl, F2, F3, F4, see "Soil Classification
Chart"
Tex{tx~e of Soil - An engineering classification of the soils by particle
size and proportion, see "Soil Classification Chart", note the
proportions are approximate and modifications to the soil group due to
stratification, inclusions and changes in properties are included;
Moisture Content - this is a qualitative measure:
dry, no or htt]e apparent surface moisture,
damp, moisture forms portion of color, less than plastic limit,
wet, no free water, often soft, if cohesive soil,
saturated, free water may he squeezed out. ifa free draining soil;
dilatent at natural moisture content, if a non-plastic silt or fine
sand. (The moisture content is further defined by reference to PI,
LW, NP, M%or dilatency.)
Density - refers to more-or-less non-cohesive soils, such as sand gravel
mixtures with or without a fine fraction, derived from drilling action
and/or sample data; usually described as; very loose, Ioose, medium
dense, very dense. General intent is to portray earthwork
characteristics.
Stiffness - refers to more-or-less cohesive soils and ~ne grained silts of
the clay-silt groups. Derived from drill action and/6r sample data. Very
soft, soft, stiff, very stiff and hard are commonly used terms.
Particle size - The largest particle recovered by the split spoon is
1-3/8", Shelby tube 3", auger flights (minute-man) 2", Auger flights
(B-S0 hollow stem) 6"-8". Larger particles are described indirectly by
action of the drilling and are referred to as cobbles, 3" to 8", or
boulders 8"+. Therefore when reviewing the gradation sheets, if any,
the description on the hole log must be considered for an indication of
larger particles.
Unified Soil Classification - This is a two letter code. See Unified
Clarification sheet for further definition· In some cases AASHO and/or
FAA soil classifications may be shown al well as the unified.
Atterberg Limits - useful for fine grained and other plastic soils.
Pl; natural moisture content believed to be less than plastic limit
Pl~-; natural moisture content believed to be between plastic and liquid
l~lmir s
L.__~; nat~al moisttae content believed to be greater than liquid limit
N._~.P; non-plastic, useful as a modifying description of some silty
mat&rials.
Dilatency - is the ability of water to migrate to the surface of a
saturated or nearly saturated soil sample when vibrated or jolted - used
as an aid to determine If a fine grained soil is a slightly or non-plastic
silt or a volcanic ash.
Rock flour - finely ground soil that is not plastic but otherwise appears
similar to a clayey silt.
Organic Content - usually described as Peat, PT, sometimes includes
discrete particles such as wood, coal, etc. as a modifier to an inorganic
soil. Quantity described as; trace, or an estimate of volume, or, in case
of all organic, - as Peat. This may i0clude tundra, muskeg and bog
material.
Muc~ -- a modifier used to describe very soft, semi-organic deposits
usually occuring below a peat deposit.
Amorphus peat - organic particles nearly or frilly disintegrated.
Fibrous Peat - organic particles more,or-less intact..
Bottom of Testhole - includes last sample interval.
Frost Line - seasonal frost depth as delcribed by dri]liug action and/or
~amples at the time of drilling.
Frozen Ground - other than frost line, described by samples, usually
includes description of ice content, often will include modified Unified
Classification for frozen soils - this is a special case related to
permafrost studies.
Free Water Level - The free water level noted during drilling. This is
not necessarily the static water table at the time of drilliug or at other
seasons. Static water table determination in other than very permeable
soils requires observation wells or piezometer installations, used only in
special cases.
Blow[6" - The number of blows of a 140 weight free falling 30" to
advance a 2" split spoon 6"; the number of blows for a 12" advance is.
by definition, the, standard penetration.
,,4% - natural moisture content of the soil sample, usually not
p-~-rformed on clean sands or gravels below the water table.
T},pe of Sample -
S__P, refers to 2" split spoon driven into the soil by 140 pound
weight, a disturbed sample,
.~, thin wall tube, "Shelby" used to obtain undisturbed samples
of fine grained soil,
.~, "grab" disturbed sample from auger flights or wall of trench,
~., cut sample, undisturbed sample from wall of trench.
L=Low, M=Medium, H=High
Group - The samples are placed into appa~'ently similar groups based
on color and texture and are arbitrarily assigned a group letter· Further
disturbed tests including Atterberg Limits, grain size, moisture<lensity
relationship, etc. may he performed on the group anti are assumed to
reflect the general distrubed characteristics of the soils assigned to the
group. This is an important phase of the soil analysis and is used to
standardize the various qualitative determinations and to reduce the
number of quantitative tests necessary to describe the soil mass.
SOIL CLASSIFICATION
CHART
.30% GRAVEL
CLAY
CLAYEY CLAYEY
\ OR\
CLAYEY
CLAYEY
OR
SI LTY
' SILTY ~ '' SILTY
SAND GRAVEL
~ GRAVELLY SAND SANDY GRAVEL
SAND GRAVELLY SAND DY GRAVEL
0 10 20 30 40 50 60 70 80 90 100
GRAVEL (+#4 SCREEN) % BY WEIGHT
NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LES5 THAN 3% FINER I'IIAN 0.02 mm,
GROUPS OF FROST-SUSCEPTIBLE SOILS:
F] GRAVELLY SOILS CONTAINING BETWEEN 3 AND 20% FINER THAN 0.02 mm.
F2 SANDY SOILS CONTAINING BETWEEN 3 AND 15% FINER THAN 0.02 mm.
F3 a. GRAVELLY SOILS CONTAINING MORE THAN 20% FINER THAN 0.02 mm. AND SANDY SOILS
(EXCEPT FINE SILTY, SANDS) CONTAINING MORE THAN 15% FINER THAN 0.02 mm.
b. CLAYS WITH PLASTICITY INDEXES OF MORE THAN 12. EXCEPT VARVED CLAYS.. .
F4 a. ALL SILTS INCLUDING SANDY SILTS.
b. FINE SILTY SANDS CONTAINING MORE THAN 15% FINER THAN 0.02 mm.
(:. LEAN CLAYS WITH PLASTICITY fNDEXES OF LESS THAN 12.
d, VARVED CLAYS.
o _o 2 ~ o o
0
0